This thread is hilarious, but I really hope devs don't see it and consider nerfing Fives. He's *barely* viable in high end arena - any nerf would take him out of the team. He is barely noticeable until the end, unless you are trying to AoE. And my gear 9 Fives can at best win a 2v1 against other gear 9 toons. He will lose a 1v1 miserably against RG or Daka.
Basically, he's another "noob slayer." If you go up against him with an undergeared team and don't protect a stunner until the end, he will seem unstoppable. On defense, he keeps you from dropping too far because undergeared teams can't take him down. But any top 10 team will run him over without a problem. I wouldn't even consider a role player like Fives to be in the top 10 OP toons (Rey, GS, RG, Dooku, QGJ, Daka, Yoda(even after nerf), Aayla, Leia, Vader(in the future)).
Nerfing him would be absurd. But carry on the complaining, it's hilarious!
Edit: Maybe the AI boosts his counter rate, but I can confirm on offense that he is only countering at 85%.