70 plus dollar price difference.
I'd compare the individual features as shown on the spec sheets of each of them at the Asus and Asrock websites.
Some of the features are likely useless to you. Some somewhat useful. Some mandatory. You have to know which is which.
I wouldn't expect one to be "more reliable" than the other unless you can find overwhelming evidence....which isn't likely. You'll get a bunch of anecdotes, buyer comments and maybe some reviews, some of which will be from mouth-breathers. You have to guess at what is wheat and what is chaff among them.
If you choose the cheaper one, do you have a good spot to spend the saved 70 dollars elsewhere? A larger SSD? More RAM? A stronger CPU? Better cooler? A stronger CPU is always a prime candidate.
Entirely possible there's a better place to spend the 70....but maybe budget doesn't much matter?
Might matter a bit if you have serious over-clocking intentions or some unusual requirement. Is this a productivity PC? A gaming PC only? A gaming PC somewhat?