LogFAQs > #970999108

Terrain is big enough that he can choose a space to shoot from that isn't just "he gets rushed before he can shoot more"

Also it's not super easy to spot a well placed sniper. I'm sure someone will see him but it's still going to be chaos. Garrus absolutely bags someone.

Zeratul probably bags two. Keep in mind Zeratul is a smart assassin and probably coordinates his attack with Garrus sniping, that gives him a lot more data with which to process exactly how the Tetrakarn works. With 2 rewinds can he figure out the gimmick and lead a sniper shot with a gut punch to dispel? Or do gutpunch -> warpblade?

Tetrakarn is pretty good but with an intelligent assassin with rewinds I don't see it have any real effect. It is good against the sniper (unfortunate he's beefy and has shields-- like a random human gunner sniper shot tetrakarn absolutely one shots them) BUT yeah ultimately the problem I'm seeing is that Selvaria is berserked and Zenos doesn't have a lot of high caliber backup aside from that.