I like both. More of a DC guy, growing up with the Batman and JL cartoons by Bruce Timm. DC has some fantastic comics as well, like Animal Man, Lucifer, The Sandman, Hellblazer, the JLA series, All-Star Superman, Morrison Batman, COIE, Final Crisis, Final Crisis Superman Beyond. The silver age stuff was timeless as well.
Now when comparing the current cinematic universes, Marvel definitely is better. But my favorite movies from both aren't from the dceu or mcu. they are Raimi's Spider-man trilogy, Nolan trilogy and Superman I/II.
Live action TV shows, Marvel still wins only because of GOAT Daredevil. Most CW shows are alright or mediocre at times. Arrow's first two seasons were still pretty good.