Thanos is generally considered more intelligent overall, with vast knowledge in science, technology, and strategy, and even possessing cosmic-level processing power, while Tony Stark is a genius inventor and strategist, but Thanos's "mad genius" intellect and understanding of universal balance (albeit warped) often places him on a higher tier, even if Tony's sheer ingenuity with tech rivals him. Thanos's foresight and strategic planning (like securing the Infinity Stones) showcase a broader, more profound intellect, though Tony's quick thinking and adaptability make him a formidable opponent, as Thanos acknowledged.
Reed is basically always stated to be smarter than Tony . There are a few exceptions however: Tony beat Reed in chess in six games simultaneously. Reed considers Tony to be the "best builder"
He also has the ability to manipulate energy and is both telepathic and telekinetic. Thanos frequently heightens his natural powers through the use of weapons, bionics, and cosmic energy. In addition to all this, Thanos is known for being remarkably intelligent and particularly well-versed in science and technology.
The directors literally confirm that. the Avenger Thanos is most scared of is Tony Stark. Not because of his strength, not because of his powers, not because of his suit, but because his intelligence.
Namor is revealed as the most hated Avenger, struggling with a violent legacy and self-loathing. Namor has been both a hero and a villain, causing controversy throughout his long history. In Namor #1, he must face his past and salvage his legacy while navigating prison and public disdain.
Mister Fantastic acts as the leader and father figure of the Fantastic Four, and although his cosmic ray powers are primarily stretching abilities, his presence on the team is defined by his scientific acumen, as he is officially acknowledged as the smartest man in the Marvel Universe.
Thanos is considerably smarter than Reed Richards or Tony Stark. Other than worshipping actual Death.....how so? Because its a different universe and a different thanos entirely, and there's nothing shown to indicate that he is anywhere close to the stats of 616.
Thanos is an omega level mutant.
His IQ was confirmed to be above 250 in the comics. It's tied with Reed Richards.
His intelligences is on par with Tony Stark's and Reed Richards. His IQ is somewhere around 240 to 250 which is amazing.
Avengers: Age Of Ultron Confirmed Iron Man Wasn't Worthy
Tony Stark was the second one to try, even joking about ruling Asgard if he lifted the hammer and what he would do as king, but his always overly-confident attitude quickly changed when he realized he couldn't lift the hammer.
Because there is no single standardized test that measures intelligence, determining the highest IQ ever will always be contentious. Bearing these caveats in mind, it is generally believed that the highest IQ score ever recorded is that of William James Sidis, who is believed to have had an IQ of between 250 and 300.
In canon Doom was always smarter than Stark is a well known fact. The only person that rivaled him was Reed Richards.
The world's smartest person with huge red dinosaur for an ally—life couldn't be better young Super Hero Lunella Lafayette, AKA Moon Girl. With her array of gadgets, her bizarre Inhuman ability, and her vast intelligence, Moon Girl has the brains to outsmart just about anyone.
However, Red Skull saw his true intentions, informing Gamora that Thanos was, in fact, weeping for Gamora, as he truly loved her as a daughter, and was heartbroken that he had to sacrifice her to get the Soul Stone. Disbelieving, Gamora could not comprehend that Thanos ever showed genuine love for her.
The Hulk has admitted that The Void is the only thing he fears.
Ferdz Ceredon the power stone coupled with Thanos' fighting skills, hitting pressure points and shocking him out of anger is the reason why Thanos was able to over power hulk, hulks strength has to develop over time the more angrier he gets, so if you can stop him before he gets that angry it's 100% possible to defeat ...