What's stopping Linux running as well as on a Thinkpad on MBP? If even Linus uses it, then surely the heating, battery life, etc problems could be easily solve

What's stopping Linux running as well as on a Thinkpad on MBP? If even Linus uses it, then surely the heating, battery life, etc problems could be easily solved. But AFAIK, they haven't yet - it just doesn't make sense? Anybody able to shed some light on why it is so?