60 fps is an established standard, not an optimal number. Otherwise, yeah.
Edit: Ok got some more info for you.
http://en.wikipedia.org/wiki/Frame_rateSo the reason 60fps is so common is due to the fact that there are still people out there using low end CRT monitors which cap out at 60hZ refresh rate. That means that the screen can be redrawn 60 times per second, so games that run at a higher FPS will show no graphical improvement whatsoever.
Also of note, the article mentions that Halo3 runs at 30fps.
That all said, different games can be designed to run at different framerates but still feel like the same speed, so it would be a bad idea to compare the speeds of games by the FPS they run at. Since Melty Blood was designed to run at 60fps, raising that will increase the speed of the game, but it won't make it run more smoothly. Moreover MB's command buffer works by frames not time, so if you wanted to play at a faster speed you're going to have a terrible, terrible time actually trying to play it.