I dunno, I think some of them were at least adequate, if not entertaining as well. All of the Spider-Man films have been above average, even Spider-man 3 wasn't bad. Blade was entertaining. DareDevil was okay IMHO. I thought the first two X-Men films were pretty good, the third was average. XMen Origins Wolverine was merely average and First Class was good. The Punisher was fine as an action film, missed the mark on a Punisher film though. And all of the MCU films have been of good quality.
DC Comics though... you got the Nolan movies which were all pretty good. And Man of Steel which was above average. But Catwoman, Superman Returns, Jonah Hex, Green Lantern.... big ol meehhhhhhh from me at best. Watchmen was okay, not really DC Superhero Universe based though.