Well, they never state what stats/level Kirito is, maybe the leader has piss poor stats/level which is why he's aiming for the last attack bonus item to power himself up.
Not poor, but
Kerry-Toe does have better stats and weapon.
Death in SAO is kinda weird--everyone always seems to have a few seconds get some words in before they go poof. So
you can put that down as being responsible for that otherwise really weird scene where Kirito offers him a potion but he turns it down; dude was already at 0 hp and he knew it. Although that doesn't make sense either because you can see the hp of any member in your party/raid at any moment! But then, it could be that Kerry just didn't have that particular window up and had no time to see it.
Still don't know where it's going. Going by ep titles I know what they're going to do but when you leave out so much detail no one has any idea what's happening, or when things get so rushed . . .