YES, the major difference between emos and scenesters are their attitude. But I don't believe all 'scene kids' have an original personality, as you say 'dont follow the personality'. Yea, they dont follow the emo personality. But they still have one they mostly all have.. they think highly of themselves.
Another difference is, emos are generally natured to black. Scene kids love colors. Rainbows, neon colors..anything and everything!(Although I see emos starting to like rainbows now..xD)
Another thing is the 'obsessions'. Emos love, mostly Jack Skellington, and such things as that. While Scene kids are more into the look of say, Sanrio characters, like Hello Kitty. And also, Gloomy Bear is a big thing for them.
While emos and scenes are close to each other, I think the difference is more than what it seems. It isnt just the personality, but the style too. The common thing shared among them is probably the hair. But scene hair is most definately BIGGER.xD
You should be able to tell the difference, on the spot, from an emo or a scene kid. Guys are harder to distinguish than girls most of the time. But see a guy with a lot of confidence and he seems like hed have a big mouth on him, wearing bright colors, and big sun glasses..I think its safe to assume hes 'scene'. While a guy wearing mostly black, quiet in the corner, walking slowly..well, thats emo. But even if an emo doesnt follow the personality, you can still tell them apart by the overall style.
Taken from http://emohairstyle.blogspot.com/