1) Edison worship was shoved down our throats for years, so yeah, that's going to happen out of reflex.
2) Edison did a LOT of really fucked up, horrific things, including the things he did to Tesla.
3) /. doesn't care about being an "all-around inventor" in the sense of Edison. It's like a Jobs and Woz comparison, and /. is going to pretty much universally side with Woz because Woz and Tesla were people more like us, and we don't see much value in the ability to be a shrewd businessman. Tesla was a real life mad scientist, and we love that shit.