This is Anderson Cooper: anderson.jpg
The resemblance is startling, yes?
That's a fair point, by the way, but another issue is that Kingsley was always portrayed as fairly scrawny in his pre-"Hobgoblin Lives" appearances. But the guy we see going into the Goblin formula tank is already pretty built (and remember, Hobgoblin was able to effectively frame Flash Thompson because they were fairly similar in build). Granted, it could be argued that Daniel was scrawny while Roddy was ripped ... but that wouldn't work if they were able to pass for one another so easily. Ned, on the other hand, while hardly muscle-bound, was a bit closer to Flash's size, especially under Ron Frenz's pencils, where he was shown to glare down at Peter.
Bottom line: I still think Ned was the real Hobgoblin, and I've got a lengthy, convoluted theory as to how he faked his own death and Winkler'd Roddy.