Kylo Ren, am I missing something?

I just recently replaced TFP with Kylo. He is unbelievably powerful in arena. His omega unique coupled with outrage stun make him almost unstoppable. Up until today, I was fully planning on using my first zeta on Vader or Boba. I think that has changed now, especially with his ability to do major damage in P1 of HAAT.

I think the only weakness would be Sith Assassin's ability to do damage ignoring protection which would stop his stun.