What I see when they throw the ball. Haener is find with short passes, but he has accuracy issue on intermediate and deep throws. Rattler is more accurate in both areas. Rattler's issue at this point is that he can't throw in rhythm and doesn't read defenses quick enough. Haener is certainly further along in that regard and he does likely give the team a better chance to win, but I still don't think he's likely to be the better QB long term. But, I could be wrong.
In the end, I just hope that one of them can become a very good starting QB because it would quickly change the trajectory of the team if one of them is.