Legend of Zelda: Link To The Past 2 runs at 60FPS in 3D

[IIIIITHE1IIIII]

"The game runs at 60FPS, while all the 3D games up till now have run at 30fps. The faster the framerate, the more stable the 3D effect, so 60FPS is a big deal."

 

What does he mean by that? Several 3D games such as Mario Kart 7 run at 60fps.