Marvel Card Tier List

So, I decided to create a full tier list so people could see how each card in the UR and SSR relate to each other. For this list I will be comparing final M/M cards. This way people can visualize which cards are better than which. This order is based on which cards are the most powerful, not based on market price. My standards for power come from the attack power, the buff, and the proc rate of the buff. Cards are listed as Name - # ATK or #/# if it has a dual purpose skill - Buff - Proc Rate.

Attack:

1. UR Spiderman - 12238 ATK - Extremely intensify ATK of your Speed Cards. (Relatively High)
2. UR Dr Doom - Extremely intensify ATK of your Tactics Cards. (Average)
3. UR Magneto - 12880 ATK - Extremely degrade DEF all of opponent's Cards. (Average)
4. UR Iron Man - 11995/12236 - Extremely intensify ATK and DEF of your Tactics Cards. (Relatively High)  
5. UR Wolverine - 12977/11254 - Extremely intensify ATK and DEF on this Card. (Average)
6. UR Hulk - 13396 ATK - Extremely intensify ATK on this Card. (Low)
7. SSR Ghost Rider (Original) - 11254 ATK - Significantly intensify ATK of your Speed Cards. (Average)
8. UR Silver Surfer - 11835/12398 - Extremely intensify ATK and DEF of this Card. (Average)
9. UR Cyclops - 12398/11835 - Significantly degrade ATK and DEF of opponent's Tactics Cards. (Average)
10. SSR Phoenix Force - 11270 ATK - Significantly degrade DEF on all of opponent's Cards. (Average)
11. SSR Professor X - 10338 ATK - Significantly intensify ATK of your Tactics Cards. (Average)
12. SSR Thor - 10144 ATK - Significantly intensify attacks on your Bruiser Cards. (Average)
13. SSR Juggernaut - 10948/10128 -  Significantly intensify ATK and DEF of this Card. (Relatively High)
14. SSR Iron Fist - 10594 ATK - Significantly intensify ATK of this Card. (Relatively High)
15. SSR Hulk - 11432 ATK - Significantly intensify attack of this Card. (Very Low)
16. SSR Annihilus - 10788 ATK - Significantly intensify ATK and DEF of this Card. (Average)
17. SSR Ghost Rider (New) - 10997 ATK - Significantly degrade DEF of opponent's Bruiser Cards. (Average)
18. SSR Wolverine - 10869 ATK - Significantly degrade DEF of opponent's Tactics Cards. (Average) 
19. SSR Spiderman - 10401/10079 - Significantly intensify ATK and DEF of all your Cards. (Average) 
20. SSR Silver Surfer - 10000/10482 - Significantly intensify ATK and DEF of this Card. (Average)
21. SSR Black Cat - 9500/10982 -  Significantly intensify ATK and DEF of your Speed Cards. (Average)
22. SSR Loki - 10466 ATK - Significantly degrade DEF on opponent's Speed Cards. (Average)
23. SSR Mr. Fantastic - 9982/10498- Significantly degrade ATK and DEF of opponents Speed Cards. (Relatively High)

Spider-man is a better card than Magneto, period, but Magneto is number two. After that Iron Man wins because his buff is to the entire deck. Wolverine beats hulk because the 400pt stat difference doesn't make up for having a LOW proc. After that Ghost Rider actually beats Surfer and Cyclops because although his stats are lower his buff is far superior. Now, after Surfer and Cyclops comes the tough grouping. It is arguable that the order should go X, Thor, Phoenix based on buffs, but her stats are so much higher and the debuff is so effective, that I think it warrants the placement. Then we start to move into the self buff cards which the order should be obvious. Finally we move into cards like SSR Spidey with his buff that effects everything, unfortunately the buff is significantly less powerful as a result. Black Cat is more tailored toward defense and its arguable she shouldn't be included, but she does buff her attack and is still better than Loki and Mr. Fantastic. 

Defense:

1. SSR Captain America - 12060 DEF - Significantly intensify defense on your Tactics Cards.(High)
2. UR Iron Man - 11995/12236 - Extremely intensify ATK and DEF of your Tactics Cards. (Relatively High) 
3. SSR Ms. Marvel - 10820 DEF - Significantly intensify DEF of your Speed Cards. (Average)
4. UR Silver Surfer - 11835/12398 - Extremely intensify ATK and DEF of this Card. (Average)
5. SSR Black Cat - 9500/10982 -  Significantly intensify ATK and DEF of your Speed Cards. (Average)
6. SSR Daredevil - 10513 DEF - Significantly degrade ATK of all of opponent's Cards. (Relatively Low)
7. UR Wolverine - 12977/11254 - Extremely intensify ATK and DEF on this Card. (Average)
8. SSR Spiderman - 10401/10079 - Significantly intensify ATK and DEF of all your Cards. (Average) 
9. SSR Juggernaut - 10948/10128 -  Significantly intensify ATK and DEF of this Card. (Relatively High)
10. SSR Silver Surfer - 10000/10482 - Significantly intensify ATK and DEF of this Card. (Average) 
11. SSR Mr. Fantastic - 9982/10498- Significantly degrade ATK and DEF of opponents Speed Cards. (Relatively High)

There aren't nearly as many viable defense cards in Marvel War of Heroes as there are attack cards. In this Marvel Card Tier list there was no reason to move past 10 cards. SSR Captain is the hands down winner followed by UR Iron Man. SSR Ms. Marvel beats out other cards because her buff is to just speed, so stacking five of her is powerful. Surfer beats out the following cards because of his high defense stats and potent self buff. It is arguable that Daredevil deserves to be even lower because of how infrequent his buff is. UR Wolverine beats out the other cards because despite being more offense orientated, his stats are solid and his self buff is powerful.. Then going forward cards are ordered for their skills.