Honestly, I agree with Jetters on this one. Playing as Luigi in both galaxies actually gave both SMG and SMG2 in whole.
Not because it's HURR DURR BONUS CONTENT (which is kind of stupid to say anyways since it was already programed in the game), but it did give a hard mode to something that was actually otherwise typically easy if you consider how Luigi controlled and the minor changes in certain levels. Like that purple comet challenge in toy galaxy where the lava changed into dark matter.
Not because it's HURR DURR BONUS CONTENT (which is kind of stupid to say anyways since it was already programed in the game), but it did give a hard mode to something that was actually otherwise typically easy if you consider how Luigi controlled and the minor changes in certain levels. Like that purple comet challenge in toy galaxy where the lava changed into dark matter.