It is simply not fair to ask or speculate about this question.
Chris Anderson is by FAR the better Coach with a doubt. However, it is the same as asking who is the better Plumber, the bloke who has been doing it for 20 years or the bloke who is just out of his apprenticeship.
With that said, I understand the direction of your question and to be honest I would say NEITHER.
I would actually like to see a new Coach who has no prior history with the Club have a go. I think it would at least break down the current politics of what is happening.