Deus ex Machina wrote:This movie is taking place in some kind of fictional space of time, after Goku and Gohan have used the Room of Spirit & Time (hereafter reffered to as RoS&T), and before Cell games.
If that's so, Goku and Gohan would have would have used FPSSj. Let's just assume they did (despite the lack of 24/7 transformation, which was the initial reason Goku created it).
Movie #10 Brolly (who's stated by Gohan to be at the same power as he was in Movie #8 ) is defeated by SSj Teen Gohan, and SSj Goten. Gohan got
a lot weaker over the seven years of peace, as shown by his not dominating Dabura (who is at first said to be around the power of, and then stronger than, Cell).
Gohan is stronger than Goten, but weaker than himself seven years ago, and yet they manage to defeat Brolly, who absolutely slaughtered that stronger version of Gohan, along with Goku, Vegeta, Trunks, and Piccolo.
In fact, Brolly seems to defy logic all together. Everyone fighting at once can't beat Brolly, but then a single punch (with some energy from the others, who could barely stand up) from Goku defeats him. Seven years later, when he has the same power, he is defeated by
Gohan and Goten. He doesn't make sense.
How about we just agree to disagree, and keep our theories to ourselves. There's too much contradiction to come up with anything solid enough to be considered fact.