The main differences lie in the storylines and character developments. Ultimate Comics often take a fresh approach with updated settings and plot twists.
Yes, sometimes Spiderman faces life-threatening situations in the comic, but his fate often depends on the storyline and the creative decisions of the writers.
Spiderman's sexuality in the comics is a complex matter. While there have been instances that could be interpreted as bisexuality, it's not a straightforward or widely established aspect of the character.
I'm pretty sure there isn't a Michelle in the Spiderman comics. The comic characters are pretty well-defined, and Michelle isn't one of them. But you never know, there could be a new character introduced in future issues.
Spiderman is not gay in the comics. The character's romantic relationships have mainly been with female characters, which is consistent throughout the majority of the comic series.