Zenyatta too OP? (Stadium)

I love zenyatta, hes an awesome character so no hate. BUT i think hes too OP for stadium matches. The amount of matches ive seen him as POG and champion of the match as well as the amount of dmg and kills they have is shocking. Tell me how you feel about this?

Hmm. Dont play stadium much anymore since they added Freja. Just fired up Stadium Practice range since Zen is a foreign experience for me, well he has homing orbs and mass discord, which sounds pretty nasty tbh. But depends how he can utilize it.

Could you describe your experience more in depth maybe?