Out of curiosity. I just took the very aggressive 3/8 square chain with lowered rakers that I ran on the DP muffler 440 046 both stock, poulan 445 475, husky 372. I put the 3/8 72dl chain 7T on my EHP redmax 5000 that was built for cutting pulp wood and higher rpm use up to 16.8k for cookie cutting. I have been running it a super fat 13.8k for years now even at gtg's. Not seeing much use in my stable with maybe 5 tanks or so and owner before me put 150 tanks through it in 3 weeks use.
Anyhow cutting the same ash log 14" wide, 13" deep I have been testing the above saws in. The ported redmax 5000 was right there with them in the mid to high 10's.
046 was in the 9's, rest 10's, 372 low 11 range if memory serves me right.