1. Wyyrlok isn't "most Jedi" - he's the guy who held off a bloodlusted Reborn Krayt.
2. That's just you playing connect the dots, Nova. Revan easily deflecting Nyriss' lightning wasn't even a working concept when Dooku first fired lightning at Yoda, so I think it's pretty illogical to start applying power scaling where it doesn't necessarily apply. That said, I can just as easily argue that Revan just has better Tutaminis than Yoda as of AotC - Yoda doesn't have to be the best in every area. Not to mention going by your logic Dooku's lightning is more powerful than a nexus-amped Nyriss', which is ludicrous. It's just a case of the movies being underwhelming compared to the EU.
..what makes the people Dooku knocked out with lightning so great? To answer your question; their Force sensitivity, their numbers, and the fact Wyyrlok killed them without even going all out.