He had one season at LSU. Much like Dave Aranda (he's on record saying it) in his first season there, he couldn't use the whole playbook. Y'all can fill in the blanks as to why he (they) couldn't use their whole playbook. It's a complex offense to run.
Canada had a great season at Pitt, with someone else's recruits, so he's done that before.
The major concern on him is not his ability as an OC. It's his MO to take a new job almost every season (or so it seems). He's had 7 jobs since 2010.