They seal better as they are deeper a touch, the bottom of the pad makes a better seal, its not a major issue they still both sound great.
The T1's and the Phillips X2 both have this sounds disjointed from the rest like instruments out on their own which I love but the vocals on the X2 are muddy and the T1 doesn't have the dynamics or bass of the Pro 82's for me both sound harsh when the music gets intense / a lot going on after listening to the Pro 82.
The Pro 82 has a full and wide image like watching a full screen picture, the other two are like watching on 3 monitors. this is where a lot of people will see this as a floor after many sound stage headphones doing this weird fake imaging.
Do I like this fake imaging sure, but I really like true imaging at the moment especially for gaming, these things are pin point with Dolby surround.