Is there any difference between the U.S and JP versions?

I kind of noticed the fact that at mission 6 when you use a mega crash to bypass the first electric barrier I don't have enough IF's for the second one. For some reason, Capcom only put out the JP ROM for the Capcom Arcade Stadium and no ENG ROM.

I have succeeded in doing it in the past, but I wasn't able to do it again.

Also, is there any info on the game's weapons if they're stronger or weaker between the two? Any info would help.

US versions have the "Winners Don't Use Drugs" screen. And really, isnt that the most important difference of all?

I was thinking more in line was to damage output for weapons and if bosses are easier in the US version. I kind of noticed it takes a bit longer in the JP version.