No difference.William Wallace said:Which is it, alternate universe or alternate timeline?
Not mine, the writers'By your logic
The writers. The writers and producers of every incarnation of Trek make their own retcons and changes. It's always been this way. Watch how Voyager slowed down warp speed to suit it's story, after TOS and the movies repeatedly crossed the galaxy at a whim.So what makes the time travel in this movie different?
Wrong. Totally. Enterprise makes it abundantly clear that the TOS/TNG/DS9/VOY timeline is the result of multiple unrepaired time travels. Watch "Azati Prime", where the Enterprise-J takes part in a war against the Sphere Builders in the Expanse of the 26th century, then see Archer destroy the entire Delphic Expanse 400 years early in "Zero Hour". By that standard, STXI's alternate history is nothing major, eitherNone of those had a major effect on history.

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