First off, stop vying for attention with idiotic threads and equally idiotic posts.
Second, Yoda is far from Grade F, 'Sucky'. He happens to be the most powerful being shown in the entire movie saga.
Thirdly, how the hell do you know that Yoda trained with Council members and others during the Clone Wars? Do you have a single shred of evidence? Or at least something to base a reasonable opinion on?
Fourth, what in God's name do you think the Dark Side is for? It is a 'quick path to power.' And apparently, in someone as powerful as Sidious, a very quick path. However, Sidious is human; he's not gifted with prolonged life. So naturally, he would cripple like a fool at 150, making him that much easier to be vanquished.
Lastly, Yoda owns, Sidious would be wasted, and you've just dropped way below zero on the noobness meter.