Converting the energy of 1,100 decibels to mass yields 1.113x1080 kg, meaning that the radius of the resulting black hole's event horizon would exceed the diameter of the known universe.
Nah, considering that even if or when he does get stronger it will never be enough to beat his alternate androids, somewhat is not enough remember he has to be stronger than both of them completely or else he'll lose due to stamina
Both were holding back before the 3 year timeskip plus goku was training gohan when it started then also we don't know if trunks got stronger either because he traveled back in time