It is pretty useful actually. Especially for classes like SM.Don't take me as saying...."OMG SSJ is so overpowered IT NEED NERF" Nope, not at all.
But I've literally had about twice Majin as I had Humans and twice as much Namekians as I had Majins back in TW.
I was never able to utilize GN and Pure Majin as well as I utilized SSJ.
SSJ isn't all that mighty, that is not what I am saying here... but what I say is you can get better usage out of SSJ
(Sorry, this reply was meant to be sent yesterday, but I had to deal with 502 Syntax Errors)
Hmm, I guess this is purely based on experiences. In my experience, I've witnessed one certain Kid Buu take on the whole platform of 70s and actually keep 80% of his health the whole time. SSJ, like sapha said, is more along the lines of a one hit wonder. So in my personal opinion as I compare the two, I look at Kid Buu as the stronger form, even though I'm a human swordsman. Also, its fine, don't worry about it.