The Power of Kaioken?

[Belle Hibiki]

I was just looking at the techniques page, and under Kaioken I noticed something that I must've skipped over.

People talk about how Humans/Non-Transformers have the only x25 transformation in the game, but Kaioken (Trained) never actually differentiates itself in duration from ordinary Kaioken, a technique that increases your power for a FEW BLOWS. Is Kaioken (Trained)'s explanation of overcoming 'physical limitations' meant to suggest the effect is 'permanent' (a la SSJ/SNS) or does it simply mean that it's Kaioken, but stronger?

[Burter Jr]

It's Kaioken, but x10 stronger.

[Hellfighter 17]

Also, it's soemthing extra for the non-transformers, since, at the time, they were at a disadvantage.