Please, GA was a Batman ripoff with absolute ZERO personality, only his gimmick was arrows, not bats. He had the sidekick (Speedy), was a millionaire in his secret identity and even had an Arrowmobile or something like that. Then they killed him off because he was so uninteresting.
Then came Hawkeye, a former villain who always challenged Cap and was a jerk with a heart of Gold. Cocky, opinionated, headstrong, liked to mess with people, to challenge them, and most importantly, didn't have a boxing glove arrow. And whaddayaknow? Not long after that, Green Arrow resurfaces, sporting a new attitude, challenging the status quo, getting on everyone's face, etc.
So um, yeah, Green Arrow might have come first, but everything that makes him popular now was added to his character AFTER Hawkeye was created, with some similarities in their personalities, nothing suspicious about that! And yet people think Hawkeye ripped him off because they both use a bow and arrow. Meh.
Someone gets it.