The WDW and DLP ToT's are different. The DL one is the same as the one at DLP (actually the one built at DL was the one origionally planned for DLP.) The interior and the start of the ride are the same, the differences begin when you get in to the lift. At WDW the lift travels out of the lift shaft and moves forward into the 4th dimension scene, then goes into the drop shaft. At DLP and DL the lift goes straight into the drop shaft at the start of the ride and the 4th dimension scene is played out on the screen in front of you. WDW has a random drop sequence as mentioned before. There are 5 (I think) sequences which are randomly picked. DLP and DL do not have the random drop sequence. I'm not sure I've explained it very well!