Do any other 5 boxers have damage consistency issues with their same class/spec toons?

My 3 warlocks stay fairly close to each other, but are always in the same order. Sovz is always always last. This is all pve, some world and some instance, he's always last.

There's some resists going on I know, but I'm wondering if anyone else has similar issues of particular ones lagging behind (maybe his last spell never hits when the mob is killed?) or if yours stay pretty close.