Before you read this, know that I'm not here to bash the movies, for I've enjoyed most of the ones I've seen. (Yes, even X3 and Ghost Rider.) I'm here to examine the one thing that always gets on my nerves with these films: Watered down villains.
When the studios take a villain, say Kingpin for example, he pretty much stays the same power-wise. However, when they take a very powerful one, say the Destroyer, they underpower it significantly. In the comics, the Destroyer EXCEEDS Thor's strength. When they adapt it for film, Thor beats it in less than five minutes. He has never been able to beat it so easily in the comics. The film was great, but I fail to understand the reasoning for underpowering; so the general audience will consider it more "realistic?" First of all, it's a movie, second of all, it's a COMIC BOOK movie. These type of films should be the ones where we get to see world-destroyers, all-powerful entities.

Speaking of world-destroyers, let's look at something that was really messed up.....Galactus.
When we heard about Galactus being in a film, it was a dream come true.....before we found out what they did to him.
However, based on the picture, some people say the "cloud" was his ship, and he was just inside. That's not what got me mad though, (I was a little annoyed at that however) what got me mad was that he seemed to able to "absorb" worlds, but when the Surfer decided to rebel, he flew right into the cloud and boom, Galactus is defeated. What? In the comics, teaming up with the Fantastic Four, the Surfer couldn't stop him, the only weapon able to do that is the Ultimate Nullifier.
I'm going to bring up the demon Blackheart now.
Demonic, eh? A very powerful entity. For a film like
Ghost Rider, you expect they'd keep in certain things.
Haha, no that picture is not from
Twilight, but I'm not here to bash on the look. According to the Wiki: "He can heal himself at the sub-molecular level, and has the ability to generate various forms of energies for destructive purposes such as powerful concussive blasts of black energy." Did we see any of that in the film? I don't believe so.
One last example, the Phoenix.
Do you know what the Phoenix is? "It is an immortal and mutable manifestation of the prime universal force of life and passion." How about the film?
Hoho, where do we begin with this? This Phoenix is not cosmic, and no where near as powerful in the comics. Wolverine kept walking through her force, and eventually came close enough for the stab. Unreal, in the comics, the Phoenix has the power to wipe the floor with the X-men.
I could bring up more examples; Doctor Doom for one, but you get the point. When we have our world-destroyers on the big screen, we want to see their full power unleashed. Comic books have all that goodness with cosmic level threats, cities toppling with one blast, there's no reason why we can't see all of that in COMIC BOOK movies.
Thanks for reading.