Rough math suggests that the Samurai changes are a net nerf, actually

[Sigiria]

This seems to contradict what info I can find from the Balance, which mentions a rough gain of 1% damage on the 2.14s set and 0.8% damage on the 2.08s set (perfect loop).

It's also different from the first numbers we're seeing. SAM appears to be the third highest melee dps at the moment. Doesn't seems to be under performing at all.