My initial reaction to this, based on what I have seen of them playing, is that George is a more dominant player. He can be the guy when the other team makes it a priority to stop him. Not sure Hayward has shown he can do that.
I will say that there is a diminishing but continuing difference between Paul George pre and post injury. I know the team around him and many other things have changed. He doesn't seem quite as dominant or as efficient. I have not checked stats on this but this is more of a general observation.
I think efficiency is an important offensive stat that is not given enough emphasis. Stars today are not only expected to put up the numbers but also do it efficiently while getting other players involved. That is a big uptick for Thomas this season. When I have seen Hayward play, he got his points and other numbers but I never got the feeling he was lifting the team up. Paul George did pre-injury (and did it efficiently) but I have not seen him play back to that level. He was close the last time I got to see him play but still not quite.
I will take Paul George over Gordon Hayward.
George's stats pre-injury and post-injury are practically identical across the board, just FYI.
In 2013/14 (before the injury) he averaged:
21.7 pts, 6.8 reb, 3.5 ast, 1.9 stl, 0.3 blk, 2.8 TO, 42.4% FG, 36.4% 3PT, 86% FT
He missed 2014/15 due to injury (played only 6 games).
In 2015/16 (after the injury) he averaged:
23.1 pts, 7 reb, 4.1 ast, 1.9 stl, 0.4 blk, 3.3 to, 41.8% FG, 37.1% 3PT, 86% FT
Pretty much identical with the exception of his pts/reb/ast which were actually all higher post injury.
In fact statistically, the last two seasons (post injury) have been the best of his career.