In the fight between Leo and Raph, I can see that Leo didn't give off all his strength while he was holding his swords against Raph's sais. Leo didn't have the heart to hurt his bro.
At the beginning, Leo didnt want to fight with Raph, but the insistence of Raph made him act.
They fighted and Leo's approach made Raph had no way to back off.
When they were holding against together, Leo saw the fire in Raph's eyes and he was a little shocked.
But that was Raph, his bro, how would he have the heart to hurt him?!
He didnt give off all his strength.
That is what i can see.
Sorry if my English make it hard for you to understand.
