Sounds like they just need to nut up imo. I did not do anything particularly special except stack fire damage (which I wouldn't call going for "specific" items?) and I can crush T3 very fast now (Actually did a few T4 rifts yesterday but I need a bit more dps before I am comfortable with moving there full time). I roll with a 1.2 mil dps frozen orb wizard and we kill stuff about as fast as each other. He can spam more orbs than me, but, both my HoTA and overpower crit for over 13 million a piece so it balances out. I also use 4 level 60 items so I can have perma-ancients. That boosted my dps,
but, before that I was just using 50 fury war cry with CDR and had enough fury to do what needed to be done.
None of my
current gear even rolled that great either, both of my weapons are under 2k dps, had to sacrifice crit on my hat to get fire damage, my SoJ got really low rolls, etc.