The pursuit of victory is of course any part of battle.

[He's not going to drop a line about how they're just sparring for fun and that it won't get extremely competitive once blows start being thrown... but:]

But I ask for my own selfish wishes, regardless of what the outcome might be.

[After all, that's what most Servants ultimately are: selfish. They answer not to Masters but to their own wishes dangled in front of them. Even despite his tales of glory, Chiron has his own reasons for wanting an honest fight.]

It means enough that you accept my challenge.