Here are some test results, the Paragon levels differ quite alot and difference in terms of damage - oh and btw items per hour is not everything, you also have to be lucky to roll 6 properties and roll the properties good - that's what Magic Find also does! and legendaries
1: MP1 with 55k dps buff Barb WW Paragon Level is 47 less than Bot 3 --
1: MP1 with 45k dps buff Barb WW Paragon Level is 17 less than Bot 3 --
3: MP3 with 85k dps buff Barb WW
Wrath not considered a buff here btw
According to this,1: MP1 with 55k dps buff Barb WW has a significantly higher iLvl 63 Legendary drop rate if i'm not mistaken. It actually DOUBLES the drop rate of these iLvl 63 legendaries.