Henry Burris Benched?

Looks like Calgary has benched quarterback Henry Burris in favour of Drew Tate for the Stampeders next game. I watched a lot of the game last week between Toronto and Calgary and Tate certainly looked a lot better than Burris. Burris looked especially bad on an ill advised throw that Byron Parker ran back for a touchdown. I do wonder though if this move would have been made if the Stamps were facing a team other than the woeful Saskatchewan Roughriders.