Right now Lowry is not only better than Kyrie, he's much better.
Kyrie, so far, is just a talented, selfish kid who doesn't know how to win.
You could say the Cavs haven't put him a position to win (true), but he also hasn't put his team-mates in a position to win.
Selfish PGs are very close to useless - selfish PGs that don't play defense ARE useless.
He's a liability.
Kyrie is easily the most over-rated player in the NBA.
That's not to say he doesn't have talent, but he is not using it.