After looking through it, it seems the English text is a pretty straightforward rendition of the Japanese version except for one difference. For reference, the English scene goes like this:
Bryan: Hey, tin man. How tough are these guys?
JACK-X: Calculating the power levels of both fighters… calculations complete.
Both fighters have been positively identified. Both fighters[sic] battle power levels are over 9000.
Both fighters are ranked as Level 3A.
Retrieving biographical data…
Bryan: Cancel data.
This mention of power levels being “over 9000” seems like a suspicious reference to this famous quote from the English dub of Dragon Ball Z, which is what I assume prompted this translation question in the first place:
The Japanese version of this scene has one change, though: the power level number.
Translated, this line is something like:
Both fighters have an average overall combat level of 8782.55.
I did some checking, and this number of 8782.55 doesn’t seem to have any prior significance, nor does it seem to be a reference to anything else. In which case, it looks like the game’s localizers saw the opportunity to include a quick reference to the famous Dragon Ball Z quote that wasn’t present in the original but wasn’t far off from the original number.
Anyway, this is my first time seeing anything from this crossover game, so it’s possible I’m missing some information or context. If so, please let me know! Also, has this “over 9000” thing been referenced in any other games? I’m especially curious about that now.