Well, this is a different White Tiger. 

This is Kevin "Kasper" Cole, opposed to the legacy one, being Hector Ayala. Hector passed his down to Angela and then Ava eventually got it at some point.

Kevin is a peak-human man with an adapted Black Panther suit that looks pretty much identical to White Wolf.

White Tiger, on the other hand, draws his power from the White Tiger Amulet from Kun'Lun.

One is connected to Black Panther, the other is closer to being related to Iron Fist. 

Why do they appear identical despite being completely different characters? I couldn't tell you. xP