Hello, i was watching this video those days:
http://www.youtube.com/watch?v=ciuAcwbny6w
And i was wondering if that's not some sort of bug, since sturdy shouldn't work more than once as it works like protect, endure, detect and king's shield.
At Le WoW, battling against Shieldon, if he uses protect in the first turn, it has only 50% of chance of activating sturdy in the next turn.
I made a test, and made a attack to him only in the third turn, so he activated sturdy, but in the second one he usually doesn't.
It's a bug or not? Shedinja is not supposed to have any other ability aside Wonder Guard, so i guess it's not being verified by the game the fact that he can get his ability overlapped and then switched for sturdy, and then never fainting no matter how many hits he gets.