Williams is a better playmaker than you give him credit for. Canberra made the GF with him and Bateman and haven't been close since. He doesn't have the skill of Moses but he reads numbers well in attack, is a good organiser and he's a good defender whereas Moses is a liability and a target defensively. People overlook that part of Moses' game too often.
I don't think he is .... not at the level that will win us a comp.
Canberra played a totally different brand of footy centered around Hodgkinson.
Moses defense isn't his strong suit for sure, but he has improved immensely and his attack more than makes up for it. Parra are nowhere near the GF without him.
Interestingly you don't seem to think Burton has any issues in that department or that he gets heavily targeted.