Y'all, I've gotta say--I highly suspect that both the Dragon I & Dragon II neck pickups are basically just the same old McCarty neck pickup. (Google the pickup specs, either within this forum or elsewhere. You'll see AlNiCo IV @ 8k on the neck pickup for all three--the McCarty pickup and both Dragons.) Mind you, I'm not saying this is bad; I've come to like my McCarty pickups lately including the neck pu. It makes sense, too: the Dragon guitars had a 22-fret neck, as did the McCarty model a couple years later, which was a new thing for PRS (the 22-fret necks, that is) and that neck pickup would've been re-calibrated to match that position. Seems natural to use the same pickup (throughout Dragon I > McCarty > Dragon II).
Now, clearly it's the bridge position where these models differ greatly. Very much unlike the "vintage" McCarty bridge pu's, the Dragon I bridge pu had a ceramic magnet and was wound at a super-hot 19k. Dragon II seems to have been dialed-back to 12k and got a the more "vintage" type AlNiCo IV magnet again.
I'm just saying... when comparing DI & DII, I think it bears discussing that bridge pickup more than anything.