Now as far as RNG abusing goes, I am trying to understand if you are against all stats being capped or just the main ones for whatever class it happens to be. If it is all stats then I can say that, yes it is hard to differentiate between hacked and RNG (if that's all they hacked), but if it is the latter, ie.e STR but not MAG capped along with most othe stats, then I'm not so sure.
Depending on the classes I pick for whatever team I decide to try (I arena leveled a lot of them then painstakingly leveled Elice) using the stat boosters I can cap out most of my stats with RES and only one offensive stat being the exceptions. Maybe luck on 2 of them.
I don't mind going up against teams with max stats in all areas, it's the teams that all characters have Imhullu, or 99/60 HP, max move, etc that piss me off. That's when I pull out my goof off teams, i.e. a swordmaster merric with horrible stats with a levin, that way at least I am getting a laugh while getting blasted by non-hacked teams since they only come out to play when I'm on those.