should've made this a long time ago xD this is what i timed.
for RoMK JP saves 1:09.47 for RotK JP saves 15.53 and on every computer virus it saves at least 8.80 and an extra 1.2s for each extra cycle.
this means for Beat RotK it saves at least 1:42.6 and for 100% it saves at least 2:17.80 and for MKU(after popular request) it saves at least 17.60 again, 1.2s extra for every extra computer virus cycle
mind you, i'm giving pretty exact numbers, but i have to say i could time it slightly better
didnt know there were version differences
only in text speed, also, in RoMK the bomb block after double bonkers is in a different position. also, the JP version tends to let boss health sound go during certain actions(changing ability in MWW, first frame tornado and crash) but it doesn't do that in EN. that's about all the differences i know of currently
i'm really bad at documenting stuff like this :/