Two thoughts (and this isn't me disagreeing, just giving the lay of the corporate land):
1) Universal seems terrified "there's a ceiling," to quote Brian from a year or two ago. HHN is their golden goose, and they appear convinced one price hike too many will bring the whole thing crashing down. Personally, I disagree -- HHN has become every bit the lifestyle brand Disney is, and I see what the Mouse can get away with down I-4. But Universal doesn't seem to think that way. Compare with their apparent reticence, based on that leaked survey, to triple to cost of an AP even if it includes EU. They seem to know their customers are more value-conscious (even if I don't think the hard-core HHN fans are anymore).
2) Related to that last point, even a $3,500 UFFP+X would sell out 500 tickets before opening night. Double that if they let them. Maybe not within 15 minutes, but I doubt more than 48 hours. Product of our K-shaped economy and the weird obsessiveness HHN breeds.