I think the quality of printing varies some of the Marvel Epic collection appear to be identical in quality to the Dark Horse Omnibus volumes. In other cases, the Dark Horse printings are superior.
I swear in some instances Disney Marvel just dumps the digital file and prints it. I thought Legacy looked bad.

Maybe I got a bad printing, I have no idea.

my opinion and my experience is marvel epic collection print quality is wildly inconsistent vs dark horse Star Wars, your mileage may vary, and there are more than one printing for some of the books. Some have better paper stock than others.