1. Yeah, he’s not worried about mace, he’s worried about Anakin, turning him. I think it’s well implied Sidious played the Jedi...I mean he winked at them while they were dying, mace just stood there letting it happen?
2. Not always true, Obi wan and others grounded Dookus lightning, it seems only Yoda could absorb Sidious lightning, just barely, he even got his saber knocked out of his hands at one point. Windu said this is beyond Vaaped n how he’d be overwhelmed