-All dps difference between role should be within (party dps × 1%)
-All dps difference inside the role should be between 3% to 8%
-Pure dps pdps AND rdps should be higner on normal level play
However synergy job should have higher rdps at optimal playing (where you need to alligned 8 people buff and burst) this should only be able to accomplice by having more pure dps than synergy in the party, since pure benefit from synergy more

Just my opinion