I will reword the questions to give a more complete answers.
Why full comp, I have the power.
Dirty wood, each cutter shares the load not dulling as fast.
Hardwood, only taking small chips, no matter how sharp.
Only buy rolls of full comp. Just run the 42 as a stumper .
To each his own and run what you bring.
Why skip chain, if the saw has the power to pull full comp ?
Weight, lighter is faster and less stress in moving parts. If your packing extra chain in the pounds add up.
Cutters, less to sharpen or repair. Each cutter puts pressure on the bar in the cut needing more oil. Think of drivers as oil squirts and cutters as wipers. This will help a little with wear and heat.
Time and Space. With longer bars cutting with the tip and the bar buried, chips have more space to move. Your not recutting the same chip has much or clogging up the kerf . Just because you have the power doesn't make it efficient cutting. This why a saw cuts the best when you can eject the chip right after the cut. Most fell this as the bottom of the bar just before the dogs.
What are you cutting ? We have so many types of cutters ,chain and spacing. This is to give us the best combination for the job.
Their is no one perfect chain for every cut. Have more then one kind and they all cut.
These are just a few points . Hours, days, and years have been spent on chainsaw chain engineering . Lets not go as deep. "What's the best 2 stroke oil" next?
Hope this helps?
