Won't he jump into using another move sooner though? He waits 4 seconds before using his main move again, which is the whole reason he doesn't match Garuda even with his auto attack. Despite being weaker moves if he's throwing them out sooner he would end up slightly higher on dps.

I mean there's really no reason to ever use him because a contagion -> bane lets you do more in the long run than any sort of dps boost he might have hanging out on Sic. Also any dps gain he would have would be pretty minor