Well they do have over shields, they never have to get into shotgun range to kill unlike bladedancers, and if by time you mean 1.5 seconds ... Well I don't think it gives a chance of reaction other than panic and attempt to run ...
24 seconds with transcendence and it has 50% damage resistance. Transcendence needs a fix as far as time goes. With this, why use bladedancer, honestly. It lasts longer, has same armor, but has a ranged attack. Either bladedancer needs a buff, or this needs a fix.