Yes, GW is really becoming sort of 'pay to win' thing in my personal experience. I do have the Wiggs combo as those guys stated above, but that's not nearly enough. Ever since I got to level 82 I've been facing level 84 teams in the 11th node and level 85 teams in the last node. Sometimes I beat them using my entire roster, sometimes I don't. That situation means I have to be a perfectionist in order to finish it, but it takes me 40 minutes to 1 hour to do so. That's really lame, not fun whatsoever.