oooh! It's not exactly the same! The arcade is quite a bit more difficult. You need 250 coins for an extra life, and there are a handful of levels that are not on the cartridge. The NES version has a couple levels (I think it's 1-3 and 2-2) which show up again later with slightly more characters, but in the arcade those later levels are completely different.

*though the graphics and mechanics are the same and I'm sure that's what you meant. I'm a big fan and it bugs me that I can only play those levels through MAME.