I'll wait till I ride it a number of the times before I judge. Example in point; I've been on Gringott's more than 2 dozen times. I agree with many that the ending is maybe too quick. But the remainder of the ride seems longer than my initial feelings. And if a scene moves quickly that generally means it's exciting and not boring. (Heck 30 seconds on It's a Small World seems like 5 minutes of bore). Now, I love the Gringott's attraction, and I don't feel it's short since I see & experience all the stuff I initially missed.And Kearnes did say the ride just may have felt shorter since he was excited and it was missing some effects. In the case of Kong, 6 minutes is very long for an attraction in this day & age. So I really don't think it will feel short after I've rode it multiple times. Maybe the first few times, as with all new rides, it may seem quick, but that changes. The 360 is only 1 and a half minutes. The remaining 4 and a half minutes is still longer than Spiderman, Forbidden Journey and Gringotts. That's a fact. I really don't know what else to say.
Teebin made an excellent point above. And to add.When things are clicking the pace seems fast. When stuff is boring it's slow as hell.