Scientific aptitude and knowledge Apart from his physical abilities, Peter is an intellectually-gifted scientific teen genius and has a prodigious aptitude in the physical sciences, with a high IQ level of around 150.
Reed Richards acknowledge him as being extremely intelligent, if a little unfocused. Iron Man and Beast call him to answer specific questions they do not have the answer to. The Spider-Sense allows him to intuit solutions no one else thought of. He probably ranks 9 out of 10 among the heroes in terms of intelligence.
1. Reed Richards - Mr Fantastic. The smartest man on ANY world, Reed Richards aka Mister Fantastic, has mastered time, space, interdimensional travel, and practically every other science known to man, as well as several that aren't.
However, out of Maguire, Garfield, and Holland, the smartest Spider-Man is Holland. There are several key factors as to why Holland's Spider-Man is the smartest of the three. The first one is that out of all of them, Holland's Spider-Man is a mathematical genius on top of chemistry, engineering, and physics.
Hulk and Banner are two distinct entities. Banner remaining inside of Hulk doesn't change Hulk's IQ. Which Hulk? If we're talking Savage Hulk, I'd put his IQ right around 99 on the Current “Wechsler IQ Classification” scale.
Like his namesake, Spider-Man's strength and agility stand far above those of the average human, allowing him to lift nearly 10 tons and to leap and move at incredible speeds with high accuracy. He also heals faster than normal when injured, though he is not completely immune to viruses and other human ailments.
From my understanding, Bruce Wayne's IQ has been said to be 190 on one occasion and 210 on another, so around that range. Peter's has more wide variation I think, but it once was supposedly measured at 250+, so basically Peter Parker is a super genius.
In a single scene in Infinity War, Shuri proves that she's smarter than Bruce, and the rest of her work proves that she's got the edge over Tony more generally. Of course, it helps that she grew up in a virtual tech utopia. But Shuri would be one of the smartest people in the MCU regardless of where she's from.
In the Marvel Cinematic Universe (MCU), the title of “weakest Avenger” is subjective and can vary based on individual perspectives. However, if we consider powers and abilities, Hawkeye (Clint Barton) often stands out as the least superpowered Avenger.
A fellow undergraduate student who went to school with Peter Parker at Empire State University, Gwen Stacy was incredibly intelligent, even compared to Peter. Contrary to popular belief, she made her debut after Mary Jane, who appeared in Amazing Spider-Man six issues before Gwen.
Spider-Man's idealism and love for others can be seen as a weakness, as it often leads to trouble and a lack of strategic planning. Ethyl Chloride and water are unexpected weaknesses for Spider-Man, hindering his abilities and rendering him vulnerable.
Online consensus suggests Spider-Man has an upper limit of 200-250 miles per hour. To put that in perspective, sprinter Usain Bolt's record is just under 28 miles per hour. Spider-Man's speed has fluctuated over the years greatly depending on the creative team writing him.
Cosmic Spider-Man is undoubtedly the most powerful variation of the character. In the Acts of Vengeance storyline, Peter absorbs a mysterious power known as the Enigma Force.
Pictured above, Terence Tao is said to have the highest IQ score in the world currently, with an impressive score of between 225-230. If the Chinese-American mathematician scored 230 he is definitely out in front. Effectively tying for the title, though, is Marilyn Vos Savant.
Thanos is known for being superlatively powerful, but he's also as intelligent as they come. Thanos was educated on Titan among his fellow Eternals and learned many secrets of the universe in his travels. Iron Man is intelligent, but Thanos is smarter than Iron Man could ever be.
In general, an IQ score is defined with a median and mean of 100. Scores above 130 are labeled as above average or “very superior,” while scores under 70 would be considered below average or labeled as “borderline impaired.” Most people have an average IQ between 85 and 115.
TL;DR - Two different types of intelligence. Intelligence isn't a zero-sum game. Tony is obviously a genius scientist/engineer, and Bruce Wayne is a genius tactician/strategist. They both dabble in both but are clearly better at those individual aspects than the other.
In the comics he has an IQ of over 250. In simplest terms, he's Tony Stark, Reed Richards level intelligent. This is going to be a long answer, mostly scans to prove intelligence. Geoff Johns confirmed that Bruce Wayne is definitively the 2nd smartest person on Earth.
Professor Hawking, the theoretical physicist known for his work on black holes, is said to have had an IQ of 160. Professor Einstein, also a theoretical physicist, is said to have had an IQ of around 160, although it is unclear whether either man did a test.
