Having played X for all of 45 minutes and never playing X-2 I can gather this much - just by looking at the difference of clothing between Yuna in X and Yuna in X-2 as well as going from a summoner character to a gunfighter is all that needs to be seen to be able to tell that Square/Enix are targetting a much different audience.

If such a thing was done with FF7 I don't believe I would go anywhere near it.