Ok - here is my guess - you are 15/16 yrs old and A7X is your favorite band.
Not anything wrong w/ that - but you should base your guitar choice on how a guitar feels, plays, and sounds - and to do that you should really get out there and visit a music store.
As for the Duncan pickups in these Schetcer models... they are "Duncan Design" (a little misleading) PUs and I dont believe Seymour Duncan actually makes them. Ive read that they are actually pretty crappy, low-end pickups. So dont let these be your deciding factor.
http://reviews.harmony-central.com/...ct/Seymour+Duncan/Duncan+Designed+HB102B/10/1
Ive never played a Schetcer or the HB-102s so i cant speak from experience here. Just trying to get across that you should go out and play the guitars before you buy.
As for the Bolt on neck vs. the set neck - again go try them out. My guess would be that you wont notice much difference - especially w/ the type of music your playing.
As for quality - w/ most guitars (especially if your comparing guitars from the same maker) the old adage - you get what you pay for - applies here.