Are the TMMT really superheroes?

[The Turtle Terminator]

Looking through the comments on Watchmojo's top 10 superhero teams video, a comment from "Readhead Royalty" basically says that the TMNT aren't really superheroes. Although I know I'm probably going to get hate mail for this, I can actually agree with his views. He brings up a good point that they have no powers or abilities apart from being mutated. But a reply comment from "golden foxa" talks about how Batman, Hawkeye, Green Arrow and Nightwing have no powers but Re part of their own teams and lead in some cases (Hawkeye lead West Coast Avengers at one point). So would you consider the TMNT as a superhero team upon the likes of the JLA, X-Men or Avengers and why?

Personally, I can't actually say due to what he said: