What makes a character a street leveler?

I always thought that Street level meant that you are a regular crime fighter,that you don't fight galactic threats or anything of the sorts,you handle local crime on a daily basis.So to me that would be people like Spider-Man,Daredevil,the Punisher,Misty Knight,Captain America etc.Alot of these characters though have been part of major events like Infinity Watch,Secret War,Civil War,House of M,and had to face larger threats..how large of a threat do you have to face to not be called street level? Does your powers exempt you from that level? I mean Spider-Man is a crime fighter at heart but he could easily beat most people in that category because he overpowers them all.Any thoughts?

Its not the power level of your average foe, Its dependent on how powerful an foe can be before you have such a small chance of winning that its not funny.

This might help
http://www.comicvine.com/cross-company-character-rankings/12-43598/

Thanks Gambler.