Originally posted by JediMaster97That guy used a lot of Legends sources to try and make his case, but that's not how it works. The Episode I-VI novels are non canon (Matt Martin has been very clear about this). Same with statements made by Lucas and Gillard. Aside from the main movies and TCW, nothing released before 2014 matters in new canon. And in new canon, the more current sources become the most authoritative, because it is still a fluid medium. Changes can happen at any time.
I'd just like to point out that it's still not clear whether Palpatine really threw the fight against Mace.Post #45 by Lord_Tenebrous has some interesting and fairly recent canon quotes which still seem to imply the opposite:
https://comicvine.gamespot.com/forums/battles-7/rots-windu-vs-vader-kenobi-2267581/
If we go by some of those quotes, Mace is probably still Yoda/Palpatine level.
So with all that being said, new canon has left the true outcome of the Mace vs. Sidious fight pretty vague in virtually every source..... That is until the "Star Wars Encyclopedia (De Agostini) #83" was released (which is the most recent and canon source). And it flatout states that states that Sidious WAS toying with Mace the entire time, so that's what we should go by until it is contradicted by a different canon source.
But if you choose to ignore that source for whatever reason, then we are only left with vagueness and headcanon, because no other source in new canon clarifies what exactly happened.