I've watch the Clone Wars animated series and Ajju(please refresh my memory on her name) was knocked unconscious by being shocked by Force Lighting from Count Dooku for like 3 seconds and Mace got thrown out the window by it from Darth Sidious. Though while Sidious was shocking Luke, he was able to stop the Force Lightning from pushing him back over the balcony and from being knocked unconscious.
And Sidious threw lightning at Luke for a few seconds then stopped again then threw it back again just to be able to hold a nice speech. He didn't do that against Mace, he attacked and he kept attacking. Besides from watching his face he put a lot more power into that, then into his attack on Luke
"And Sidious threw lightning at Luke for a few seconds then stopped again then threw it back again just to be able to hold a nice speech. He didn't do that against Mace, he attacked and he kept attacking. Besides from watching his face he put a lot more power into that, then into his attack on Luke"
The ones is right... He was not trying to kill Luke at least not right away. He threw everything he had at Yoda and Mace and didn't do that against Luke.