There are just inconsistencies in this one trait when compared to others. We are unable to break the previously established cap on any other trait, so if they really did make this one unique, it's just odd.
Which traits? For attack/acc/etc bonus we are capped at tier 4/5/6 depending on gifts, we would need another level of job trait bonus to say blu doesn't go past the caps of other jobs. The only exception I can see is counter, and I doubt anyone has ever tested it to make sure it doesn't go past that of mnk.
Also, it just doesn't make sense for all other tiers of DW to be in intervals of 5 and for the final tier to add a very odd amount (not even certain on a precise number).
Yes it does. Like I said in my previous post, 36-37% DW is the exact amount needed to floor delay with capped magic haste. Not that setting anything above DW3 is a particularly good idea if you have basic gears, but it makes plenty of sense for the numbers to stop there.