Originally posted by Kento
But strength has nothing to do with how much ki they have nor does their speed. How much that increase can't really be measured by how much of a ki increase they get. It's impossible to know for sure. It's all guess work without anything to prove it. So either of you could be right or both totally wrong.
Here is Toriyama writing about how a Kai o ken increase the STRENGHT.
"Vegeta strenght far surpassed gokus expectations! not even DOUBLING HIS STRENGHT through the kai o ken was enough to stop the saiyan.. Now what will he do.."
SSJ1 = more than Double X20 Kai o ken in the Freeza Saga.
if is not linear does not necesarilly means less.