ahill1 said:
Evil Vegeta said:
Basically because they do an extended power-up to reach their full-power. Both kids transformed to Super Saiyan before raising their power to maximum. I don't think they just start out at full-power. The kids transforming just seemed like a regular thing to me.
By not making the blast too powerful to the point where it might accidentally kill #18.
Goku also did an extend power up in the Cell Games and yet later he seems to reach full power as soon as he transforms.
But if the blast was amplified, why would it be <<< kid Trunks?
That's Goku, though. All characters aren't the same. Goku still needed an extended power-up to reach full-power despite having complete mastery over the form. When he transformed against Yakon, we don't know if he was actually at full-power or not. Either way, he still has far more training and a better understanding over the form than the kids do.
Because it wasn't his full-power. Remember when Vegeta fired a held-back blast at #18 that wasn't at full-power? The only thing said was it wasn't his all in the blast, but it was more power than he used up to that point. Despite that being the most he's used, it still was nothing compared to what he could do at full-power.
You can use amplified attacks that aren't necessarily above your full-power. Cell fired a KMHMH at Goku while he was revved-up, so we know it was an amplified blast. It also was far inferior to the full-power KMHMH he used later on against Gohan. Amplification varies.