He was in Tenkaichi 3 too then. Either way, irrelevant.
SSj2 Gohan is weaker than EoZ SSj2 Goku. Point?
You want to take movies into account? SSj3 Goku said Fat Janemba's ki was the strongest he's ever felt, and fat Janemba was after Broly. So even with your non-canon nonsense, SSj3 Goku>>LSSj Broly. More so, I simply suggested SSj2 Goku is debatably stronger than Broly, not being stronger, however that clearly indicates SSj3 Goku is stronger until you can prove otherwise. SSj3 Goku's Zenkai isn't even being factored in here.
Nothing suggests or ever implied that this SSj2 Gohan was weaker than the one at the Cell games, I believe.