Soooo, just to be clear; you don't like that other people can, sometimes (because you did indicate you can win), beat your team... And that their toons can one-shot and ....and that their toons are faster.... And this is not about whining???
Let's be honest here; this is exactly about whining and that you don't like that you have a difficult time beating the current meta.
Don't try and convince me this is about variety, that is BS... The arena has been, and always will be, about the next GREAT meta! There HAS NEVER BEEN Great variety and if you are trying to make the argument that nerfing this meta will change the WHOLE ARENA make-up (or variety) then you are either a fool or very naive.
The Nerf will come, it is inevitable because people will whine... That is what they do here. But this meta does not change anything about the arena make-up (other than some faces) just like the next one will not... So don't try and convince me this is about how "bad" the game has become (or the design is)! Because it really has not changed; just new faces in new places. Much like after the Nerf comes... There will be another meta with much the same faces through the arena. Maybe new faces (or old) but with much the same as the last time and the next time. In other words; your Nerf is not gonna change the how the arena functions!
You know what the difference will be? You may, or may not, get one-shotted , and the toons may, or may not, be faster than yours. You are not mad about how bad the meta is; you are mad that is hard to compete against the current meta is! That is the reality here!