system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Why is Dr Doom so strong?

I have heard that he is really powerful and even has killed celestials at one point. What are his powers, and why is he so powerful? Aint he just a guy wiht a powerarmor and a little magic?
gpt
Imagine a man who is *nearly* as brilliant as Reed Richards. An expert in engineering, particle physics, chemistry, and a dozen other sciences. 

Imagine a man who spends *nearly* as much time working on and perfecting his power armor as Tony Stark (with slightly less ADHD-like tendencies). 

Imagine a man who *just barely* lost out to Dr. Strange in the contest to be deemed Sorcerer Supreme of Earth. A man who has fought and defeated godlike, interdimensional beings on more than one occasion. 

Imagine a mortal man who is *nearly* as ruthless and manipulative as Apocalypse, then give him his own legitimate (albeit small) nation to rule as his own. 

Then smash all of these men together into one man, and you have Doctor Doom.