as for the anime:
I think it's a lot more likely than the manga, for sure, though IIRC the only basis for it is the scientist guy saying this? Which is hardly concrete, the statement itself is an estimate/guess in and of itself
It would be weird to equate Tetsuo's feat to a big bang and then immediately show that the feat barely affected a city in the end, and we never actually see a whole new universe at the end, just some nebulous indistinct space with Tetsuo's voice
Not to mention there's still the issue of Tetsuo not being in control of this in the slightest, it taking a super long time to pull off, the obvious strain he has to go through, etc etc
tl;dr if you wanted to use the movie for uni Tetsuo, sure I guess? I don't think it's infallible but theres more supporting it than the manga, but even the movie has plenty of practical issues