Completely different brackets. I got a level 80ish hulk. Nothing I have is over 85. I dont see triple digit folk so there isn't really any "hulk dies in one turn" theres just me, a bunch of folks all rocking cards no higher than a max level Ares and everyone deciding that its too much effort to deal with a Hulk with so much health.
Seriously, it works. I've placed plenty of times and we know this and I dont buy shields. No one fights a team that takes too long to kill. Maybe when you fight in 100+ level cover brackets yeah sure, but I dont. I don't whale and buy a ton of 10 packs. I get what I win, I occassionally use $2 from steam wallet for health near the end to push more points, and I pay for recruit slot and thats it. How am I doing? I have all the cast save like 2, not all of them have max covers, but what I have stays top in any bracket my level. I progress, I evenly level my stuff and I win.
I've been doing it for awhile by making my team when I'm ready to quit have a really healthy Hulk. If its not working at your levels then thats fine. However, I see 1 or less attacks when i do this at my bracket level. Have since Near January/February because there have been so many new cast that rather than power level anyone I've stayed at this bracket due to spreading iso amongst the new recruits..