Explanation on the R=U theory?

[Pharoh Amon Khan III]

Well, dude, look honestly, Odine was wrong about Time Compression. Ultimecia could not compress 'all time'... She could only compress the present moment and the past, no all time which would encompass the future.

I don't remember it being stated anywhere that she was only able to compress the present and the past. Evidence plz.

What I'm saying is that she can only compress the present to the past but she can't compress the future because she hasn't gotten there; if she did, she would either already be dead or somehow escaping her fate by altering the future; which of course we know that she doesn't. The only 'evidence' I have is that she didn't compress the 'future' that couldn't be possible. Of course, at the time of his statement, Odine may have been referring to the future from their current time perspective, but either way it still stands she did not compress the 'future'.

Seriously, I don't care how much to type the character is, he can't make invalid predictions of the future. Heck Reed Richards doesn't do anything like that... Odine could be wrong, its a possiblity.