My understanding from reading some posts here is that if you have the ESP and there is a TSB on an issue you have, it should be covered. The problem isn't the paint. The paint is bubbling due to the underlying corrosion which is what the TSB is for. I agree that there doesn't seem to be any consistency on why some are getting full or partial compensation for repairs.
It may not help but I would suggest contacting the FordService rep on this forum and see if there is anything they can do to help. At this point is seems that you really have nothing to lose by doing so. You can use this link;
http://www.explorerforum.com/forums/index.php?conversations/add&to=FordService
When you PM, be sure to include your full name, best daytime phone number, VIN, mileage, and servicing dealership in your message.
Good luck and I do understand your frustration especially now that Ford has apparently admitted they have a problem by switching suppliers.
Peter