Honestly, who would rub in a loss in the face of someone who was just learning the game? Jotaro doesn't think he's a good person but he's not that sort of asshole.

"Sure. It'll be good practice for all of us. In the meantime, learn from what happened today." And he's not just talking to Joseph. Jotaro watches Rush hurry behind Joseph but doesn't call out the sulking Charmander. He just nods.

"What's your plan now?"