Originally Posted by Specter313
How do you know? Anyway, if they wanted to use the Exiles version, then they would have just called him Thunderbird. Not gone out of the way to specify him as Warpath. There's a reason they went for him instead of the original.
Maybe it's because Thunderbird is only known for being in the comics a few issues before he died (when Count Nefaria's plane blew up). He didn't have much of a role or contribution apart from being an arrogant ass who learned his lesson the fatal way, and showed that the new X-Men were vulnerable after all.
Perhaps they thought using Warpath gave them a bit more freedom with the character. Especially if he's in the dystopian future rather than being part of the 70s line-up.
My point is that the two are pretty much interchangeable when it comes to making a movie. If there is any logical reason why they opted for Warpath, it could be for the reasons I gave, or for some other reason.