SSJ2 is the best look, that's for sure. For Goku and Gohan.
Vegeta was best as ultra SSJ.
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Hm, apparently my recollection of that scene was a little off. Anyways, as OBM said, Goku's hair changed during the final sequence of that scene. That's what I was referring to. I realize that there was still no lightning, but IIRC, there wasn't any lightning when Gohan went SSJ2 either, in that movie.
Regardless, even assuming that final scene was Goku going SSJ2, that doesn't mean that Broly is anywhere near Goku's SSJ2 level, since they immediately dominated his blast and shot Broly into the sun.
I guess I don't know though, it's always just been my opinion that Broly was more impressive than SP Cell. Broly casually ragdolled SSJ2 adult Gohan, who should have still been at least around the level of Super Perfect Cell. I definitely couldn't see SPC ragdolling him like Broly did.
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Goku definitely wasn't SSJ2 there. I've watched that end scene several times now, and I still can't figure out what you are talking about..? Goku's SSJ hair stays the exact same during the entire scene -- it never went 'up' in some sort of distinct SSJ2-esque manner. Perhaps you *thought* that was the case in your recollection of the scene, but that was likely just because Goku's hair was blowing wildly in the winds generated by his beam-struggle with Broly. In any case, he was most definitely SSJ1 the entire time.
Anywho, the Broly vs. SPC debate is an age-old argument that has popped up a number of times on pretty much ANY anime forum on the interweb. I don't expect that any sort of consensus will ever be reached, unless a DB figurehead literally comes out an makes a official statement that one is superior to the other. /shrug
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