First off, he actually counted Spidey and the X-Men himself in that comparison, so don't go moving his goalposts for him
Second, if all we wanna talk about is the movies then DC's big buildup is Steppenwolf at a comparitive time when Marvel had already pulled out Loki and Red Skull... and in the meantime since then Marvel has still picked great villains in the following films, just often not given them meaningful roles (which is different from not having great source villains to work with).
EDIT: And as someone else pointed out, DCEU already ruined Lex, Joker, and Doomsday, and even Steppenwolf ain't lookin' too hot visually at least. So once again, great on paper but trash in execution (well-done steak covered in ketchup analogy repeats)