I don't really know what to tell you, but my gut says if you're questioning it, you're probably not a four. Take that with a grain of salt, 'cause I'm not a professional.
Here's what I do know: My life. When I was a teenager, it felt to me like all the adults in my life were trivializing my problems. When I told them that, their reaction was that of course I felt that way, all teenagers do. I tried to explain that this was different, and of course they didn't listen. Now, here's the kicker... In my case, it wasn't "being a teenager" that was the problem. Either that, or I'm still that immature at 30. But my coworkers seem shocked at how immature my mom is, and they seem to think I'm pretty mature for my age, despite my shortcomings. So I'm gonna go out on a limb and say I wasn't the one being immature most of the time I was young either.
My family suffers from a lack of empathy. Not just with me, with everyone. From the time I was 5 years old, I can remember asking innocent questions and not understanding why I got told to stop being a smartass. I figured out pretty early on that I was either going to have to find a way to explain myself in a way they could understand, or just deal with the fallout when they would inevitably misconstrue everything I did or said. It's still the same. I don't try to rebel. I don't set out "to be my own person". I just do what I was told I was supposed to 1) obey the golden rule and 2) follow my heart. And somehow that's all I need to do for others to tell me I'm "a character", unique, a rebel, and all sorts of 4 things I'm not trying to be. I even dress conservatively and have no visible tattoos nor piercings. But apparently I stick out anyway. Not that I'm complaining. I wouldn't know what to do with myself if I were normal. And that's pretty much the best way I can sum up the difference between being a 4 amd being an angsty teen.