Difference 1:
The Easter Bunny giveth. Nabbit taketh away.
Difference 2:
The Easter Bunny has buckteeth. Nabbit might have buckteeth, but prefers to draw sharp ones on a bandana to look scarier.
Difference 3:
The Easter Bunny has a cottontail. Nabbit will be on your tail if you have anything that he wants.
Difference 4:
The Easter Bunny has tall, straight ears. Nabbit's ears are always flying straight out behind him as he runs away with the goods.
Difference 5:
The Easter Bunny shows up at Easter. Nabbit shows up whenever there's something worth nabbing!
Super Smash Bros. for Wii U (ESRB Rating: Everyone 10+ with Comic Mischief, Cartoon Violence, Mild Suggestive Themes)
Mario Golf: World Tour (ESRB Rating: Everyone with Comic Mischief)