i suspect wizard is using sever....
http://us.battle.net/d3/en/item/sever
So essentially it's useless. Whereas my group are doing actual damage via witch doctor pet which DOES HELP QUITE A BIT !

We even tested it on Ubers T6 which was cake EXCEPT the diablo fight. We still could do diablo but took much longer X_X:

Probably would have been easier on diablo had we had 2 or more witch doctors with similar gear 

But i thought the sever number only apply to last hit ?

35 runs 3.2 billion exp ..... :}
1 run = kill ghom 4-6 seconds. to remake in total 20 seconds...
so 35 x 20 = ? you do the math 
ghom run
- best gold farming
- best exp farmin
- t6 boss loot drop. Think this bit though probably nerfed soon according to blizzard.