THATS NOT A MARVEL FILM HOLY FUCK
HOLY FUCK it is? Who do you think came up with the initial story? Why did Stan Lee have a cameo? Why does Disney own Marvel? Why are there Marvel comics dating back to 1998 about Baymax and Hiro and the rest of Big Hero m6??? Chill bro, do some googling. Its good for you.
Also, Tony is in the college working on personal jets for cats and in ultron, he has the tadashi chip.