Chains to tight for one and you need more saws for another.
My analogy to the causal observer that asks how many saws we use is to reply that it is much like a chef that has a knife holder on his butcher block that holds many knives and each has a specific purpose.
The big knives to reduce the carcass into workable chunks and as the deboneing or filleting proceeds they progressively use smaller knives.
If the carving game is to make money one must constantly keep upgrading and replacing saws and bars until the balance of whats necessary is suited to your needs.
so its not a question so much of one bar size/power head combo over another as having the choice of what you need in the moment, each has a certain use at a certain time in the carving process.
the right knife for right slice or cut so to speak.
Indy has some great points and has more then likely got some bars for sale as he exits the building.
Experiment often,wreck some wood and have fun....
Plus your chain is to tight!
and remember carve or starve...