Blademaster by far
With equal gear, Seeker is much much much tankier, it is just that, this server doesn't have that many "good geared" seekers, so you don't see them. This isn't an argument this is a fact carefully measured by the greatest mind in the world >me<
Soochi clearly has never seen Ominslasher get 2 shot by a full dragon wizard by spark combo. A dragon WR with magic marrow can tank better than that...
I don't care about your small sample size examples, iv'e tested both, and i am best therefore i am right