It's certainly a debate. I wonder if the definition of superhero is a bit outmoded. I think it's more like 'costumed heroes' (Batman, Superman, Spider-Man, Iron Man, ect.) and 'transformed heroes' and 'monster heroes,' ect. Otherwise, the definition could be stretched to include just about everything. Mythological characters, Jedi Knights... even characters like Robin Hood and Sherlock Holmes, despite lacking supernatural abilities, do possess extraordinary (but still plausible) abilities and distinctive costumes.
If I were asked what my favorite superhero is I'd have to stop and ask if they mean 'superhero' in the most traditional sense or in the broad sense. If they say traditional I'd say Plastic Man, nontraditional: Popeye or Hellboy or even Doctor Who.
John Carter..it's strange..I think, yeah, the way he is captured at first, then becoming almost a slave/plaything for a tribe, the gladiator fight in the arena..the stand of Carter, where he is jumping and literally covered in the blood of the wave of enemies...yeah, just has an epic tone to it, reminiscent of those movies like Spartacus, Ben Hur, etc. Hell, even a bit of Lawrence of Arabia, especially in the scope. Just my opinion.
Superheroes are also about origin stories, discovering powers, and dual identities (yes, even for characters who don't have secret ID's like Captain America). They are about becoming more than what they were and different in a way that allows them to overcome the villain that is a danger to innocents because they are also different and super powered/gimmicky.
While this does overlap with other non-superheroic franchises (like Star Wars), there's a lot that goes into making something distinctively in the Superhero genre. GotG is more about a diverse group of aliens who go on an adventure. Superhero elements, yes, especially Quill becoming Starlord, but it's mostly superhero in a more broad sense. If we consider Guardians of the Galaxy a superhero film then we can say the same about Star Wars or Harry Potter.
What a pleasant surprise this one was! i think this one is the most fun sci-fi film of the year and my fave comic film of 2014 with X-Men second then Captain America third, Snowpiercer doesn't count as it's 2013.
Kind of reminds me of stuff like Heavy Metal, Star Wars, Star Trek, Outlaw Star etc. with great acting, writing, humor and nice direction from James Gunn. Grott and Rocket stole the show for me man, i also dug that surprise at the end credits which put a smile on my face.
Bring on the sequel!