+skill does not effect resist rates. Resist rates are solely the level of the spell vs the level of the target (there's an additional calc for level difference from you, but in rvr you are all the same level so it's not really needed).
That being said a few things:
1) The 10 blade snare is pretty nice, you might not use it much, but it's nice to have. Also, what is not readily known is that if you perform the style and reequip the harp prior to the song's tick ending, you won't have to restart the song. So it's great for being able to provide a rupt / snare without jeopardizing yours songs even when you are being rupted. However, I will admit that it takes some getting used too, so some people probably would prefer to get the 30% res or 33 major heal instead of the 10 blades... and if it fits the play style you are comfortable with, do it.
2) The bigger radius for the AE mezz is kind of nice, but the insta AE mezz is basically a speed breaker only. You shouldn't worry much about the duration of it regardless. There's times where the extra radius is awesome, and there's times where it's nice to have the smaller radius to not catch as many people in the crappy duration.
3) Unless you are doing lots of small manning, you probably won't be healing all that much. Usually the bard has better things to do. Sure it's nice to have the heavy heal just in case... and you could argue that the duration increase isn't that much (9 total seconds) on the casted mezz so it doesn't really matter. Some fights the lower power of the yellow AE mezz is very handy to have. You will want to run high MOF though to boost the spell level up to not get resisted as much though.
basically... it boils down to play what feels right to you. I've seen lots of great bards with both specs, and some of the people I play with just have play styles that lean more to one vs the others. Spec toward your play style, and you can make either spec work wonders.