If Girgensons were on the ice w/ Eichel & O'Reilly & the D kept the puck away from either of those guys in the low slot, giving Z an opportunity backdoor, the other team would likely consider it a win.
Giving Skinner a clean back door look rather than an outside shot from Johansson or a slot shot from Sobotka is a big loss.
Context matters.
Every time Carrier got an opportunity for Vegas in THAT game, it was a win because somebody that might actually score DIDN'T have the opportunity. 😉