Well I think Big Hero 6 is starting to overtake Frozen now. Or the conglomeration teams of the best character from different sets...Elsa, Hiro, Honey Lemon, Bubbles, Gantu, Shan Yu...no synergy in the combos but they are still crushing teams with synergy and the broken speed manipulation.
I agree, and it is only the teams I play against. My Anna doesn't counter nearly the same and maybe get 1 assistance per match while the opponent gets an assist almost every time!! There is definitely a problem!!