Hi Casey,
if you popped over to the chainsaw forum, the guys who live in there are die hards and would be able to give you a whole swag of info.
For my money like Reid said less teeth for the same length of chain, I would expect less power to be needed.
At the moment I push a chain which has 2 on, 5 off, I've been told that the same length chain can be pushed with more teeth, but to do that the sharpening is done such that it will fly through about 2m of log, but then need re-sharpening and so on, fly like heck, then need re-sharp. All to do with how it's sharpened.
A little above me as I just do what I am told by the manufacturer and leave the R & D to their time and budget rather than mine
