Definitely. The algorithm should be consistent.
I think they actually used to use the same algorithm, but on iOS it changed drastically in iOS 10. They added this 'brilliance' function and now the auto-enhance tends to crank that and make things all super high-contrast and over-saturated. I'm guessing they haven't yet brought this new algorithm to Mac OS and that's why there's a discrepancy.
I really loved the old iOS 9 auto-enhance algorithm, it was spot-on 90% of the time. Now I never even touch it in iOS 10 - the result always comes out horribly fake-looking. I manually adjust everything now. Hope they can resolve this in iOS 11.