I know this a stupid discussion because it's basically cherry picking about which guy is worse at what, but I have nothing better to do this morning and I have to vent my anger some kind of way

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They are both awful coaches who never before and never after would or will get a head coaching job outside of Dallas -- something both men achieved due only to the unique ownership of the organization.
I think Schotty is a better offensive coach than Garrett, but Garrett makes for a better HC.
Garrett proved time and time again that he had zero conceptual understanding of offensive football, which is exactly why he was terrible with the Giants when he got their OC job.
Schotty is average at best, but at least he's that -- average. He's not completely lost, but his conservative nature coupled with his ceiling as a coach makes it to where he'll never be anything more than average as an offensive mind.
Garrett is better as a HC because I think he at least knows what a championship team is supposed to look and smell like since he was fortunate enough to be on the Cowboys roster in the 90s. So he tried to emulate what he could (despite the unique circumstances of the circus) but just doesn't possess the natural ability to do so that a person has to possess to be good at something.
The best analogy I can come up with is that Garrett is like a a sous chef who was fortunate enough to spend years in some of the best kitchens in the industry but just didn't possess the natural ability to be a good cook himself.
He knew what methods and ingredients he needed to make the best meal, but when it came for him to do it himself, he simply couldn't.
Schotty literally has no clue whatsoever how to run a football team or what makes for a winner or what culture to establish nor what sort of methods to apply that are conducive to winning.
I think if you gave him 10 years, I think his record would be significantly worse than Garrett's and there is NO CHANCE any of his teams would go on the kinds of runs the 2014 and 2016 Cowboys went on under Garrett.
It's sad that we can even have this discussion and it's ownership malpractice that Jerry Jones has given the keys to Cowboys to either of these guys.
It's shameful.