Yes, it probably is, among the stats they show on the stats sheet. You could also make a case for passing yards and completion %. Zach leads Burris in all three.
But there are other stats they don't show. Things like red zone percentage, number of 30+ yard passes, and second down conversions - in which Hamilton had the highest percentage by far (60.6% prior to last week) since the league started tracking it in 2008. It sure wasn't the running game that got us there.
Then there's consistency. We've been in every single game this year down to the final seconds. Biggest margin of loss before last week was 4 points. Ottawa has been blown out a couple of times, including one game where they only scored 3 points. The consistency issue kept Burris out of contention for MOP in 2012, despite leading the league in passing yards, completions and TDs.
Anyway, the overriding point is you can't judge a season solely from the stats sheet - you have to watch the games and evaluate the intangibles as well. Prior to getting hurt, Zach's was the only name I've heard mentioned in the past month and a half as an MOP contender.