Yeah, I'd doubt that Potter would be able to go up to GE..But that said, do they need too?
Their goal, should be very much to regain their reputation with this attraction; especially considering everything being made to have it come to life.
...I somewhat, doubt, Josh for some reason. I don't think that either one is "shelved" (as he somewhat makes it to a point in the article that it's not exactly canceled), but that Universal is playing their cards close to the chest.
If they make their play, we'll know when the crap hits the fan (looking at Jurassic Park on this right now in particular). And considering things stirring up, I doubt this means there is tension between the two parties. In-fact, quite the contrary.