No clue on a car because I don't race cars and haven't researched it. I can tell you a saw with a max 6 HP within .1 HP from 6500-9200 rpms is a better cutting saw that one that has max HP of 6 at 8000-9200 rpms. The more torque the better for larger sprockets and bars.
Incorrect IMHO. If you set the saw up with the correct sprocket/bar & chain combo they will be equal. Power is power and it's always there, it doesn't magically disappear, you just have to use it properly.
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