yeah i dont see how your skeles are doin over 3k..
My necro is at lvl 81 with
36 to skeles,36 to mastery and they do 470dmg each and then with amp 940 each, thats without soj's and Summon Gc's,
And yes skeles last longer then revives, i kill baal hell and not one warrior skele dies, only 2 or 3 mages.