It honestly doesn't if all you do is miss miss and hit every once in awhile. Helps with the cures, but it's best macro'd in for job abilities and flash. Then using other stuff like accuracy gear to be hitting more. When you don't have hate though what is enmity going to do? Give you more hate on Cure III/IV flash and provoke if all other timers are down.
Enmity gear will only help a tiny little bit with ws dump. Not much but a little bit for getting hate back if the paladin honestly tried and uses job abilities wisely. Enmity helps here with sentinel and other abilities, but using the abilities is more of a factor over enmity gear itself. If you just cluster fuck your job abilities then enmity gear wont do much of anything because the paladin just burned all of his abilities in one fight.
Wearing enmity gear full time is just kind of stupid even just swapping to amem mantle (nq I r broke) life belt and a vener's ring can help with how much you hit. Then there's if the paladin has access to some homam pieces or even dare I say Ares'. Just some better pieces that can be worn to help hold hate over full enmity gear. Yes enmity gear will help with lowering how much hate is lost from taking damage, but hitting also helps negate that out.