Although it's a pretty common metric for people to compare it some of the least meaningful or important aspects of a rifle scope. If a scopes primary function is as an aiming device so long as you can see what you're aiming at it's able to accomplish that task. I think that's the point he was...
I don't know if it makes a meaningful difference that way. I just like that it wasn't in the way of my work space. The arca mount is nice too. I keep the vice in a cabinet till I need it.
You have to go way tighter than what seems reasonable on the viper. If your top cap isn't bending is not tight enough. Mine only lasted around 8 barrel removals.
You have to shock load it with a quick hit when your removing the barrel also.