Let me start by saying I HATE Ezio. I don't have him as I can't afford him, well, the 5* and 7* variations of him anyway, and he is a constant pain in the arena and crucible. Having said that, I understand that paying customers do need to have a good advantage over non paying to justify the money spent and, although it pains me I'm OK with that.
HOWEVER, I also think Ezio has a few issues that need to be fixed. First of all, he can't dodge out of Cara's ult. And yes, it does happen and it's easy to reproduce. All you need is a crucible fight with Cara's energy full and Ezio in front of the other party. If your first move is to use Cara's ult on Ezio, he will be trapped, take one or 2 hits, but as soon as he gets hit by the front line heroes he will dodge the hit and jump out of the cage in the process. That is a clear bug imho that needs to be fixed. Also, when he is jumping around hitting people he should be hittable as well. Alana's ult is basically the same move but more focused and I've seen her die mid ult many times. If anything it's just not consistent.