I don’t think any build is dominating arena (Cerebal Vortrex comes close…). It feels like rock (battle tank war), paper (immortal build), scissors (bursty rogue or war) at the top of arena right now but I think everyone on d1 can beat any other AI when played manually just some matches are harder or take longer than others. There is a threshold that builds need to get to to be able to compete though so poorly constructed builds won’t get past division 2. Also there are a lot of cheaters in division two and maybe only 1-2 in d1.
There’s a trio of immortal AIs (Mandelbrot, Scotty, and JWS) that will force you to refine your build to advance to the top 5 and then you will be facing wars and rogues that can do a shit ton of damage.
It’s a fun time. If you get to the top make sure to let us know