They're different players. Hayward is more of a playmaker. They're closer in value than people think. David West is actually at least as reliable on offense for the Pacers as Paul George.
I'd much rather have George, but it's not because Hayward isn't quite a good player in his own right. The thought of the defense with a core of:
Favors, George, and Bledsoe makes me drool.
West is a much better offensive player. George is okay, but Indiana as a team kinda sucks on offense.