p123 said:
Who says that Goku is suppressed?
Well Goku was on par with Yakon in base, that is, at 800 kiri. Unless you think the SSJ multiplier is less than 4x, then he was likely suppressed. Besides, Dabura was pretty confident going up against Goku despite knowing his 3,000 kiri reading, in spite of struggling with SSJ Gohan, who should be weaker than SSJ Goku. Therefore, SSJ Goku wasn't at full power there.
Besides, the SSJ was just to lighten up the place, it doesn't need to be at full power.