yes, it does.
Glasses 3d halves a game's framerate, and so if a developer wishes to double the framerate so that it is back to normal after being halved this obviously requires more of the CPU
Glassesless 3d halves the resolution - in the 3DS's case it halves the number of columns of pixels that the screen can display, and again if you want to double the resolution this requires more of the CPU







