its fine imo... just because volgar said a zerk could do 12k doesnt mean its actually happened, they are in line with wizards which is where they should be.. and this is on vlan, where melee's notoriously parse higher, go fight the ct dummy with raid buffs and discs over a 5-6 minute parse and see where you land.
The whole... melee v caster dps thing against vlan is not accurate, as long as the wiz doesn't get resists, he's going to parse the exact same on a raid mob, the melee is not.
The only thing melee parses are good for against vlan, is to compare against other melee parses against vlan