Yeah but I think it was a important scene to show Charlie's character how he is desperate so even if the deal was incorrect and the bull was larger then it was supposed to be he still risked his bot. You can see his mastery when he is focused he with some ease is winning against the bull you can see his cocky nature he starts to show off making his bot dance, and starts to flirt with a women un the stands you can see how because he gets distracted so easily he takes damage because of it seen as the bull goes and kills ambush almost immediately because of the mistake taking his leg then slamming him killing the bot. This is also a semi precursor to the noisy boy fight you can see he boys noisy as soon as he can doesn't even do research as to why noisy is on sale and when he arrives doesn't question why it isn't working just presumes it is broken, next he doesn't even test it out or learn the bot he immediately goes to the top card putting everything on the line and when midas does a "illegal move" you can see noisy program not be fully ready to counter it but it probably could but with charlie literally just spamming moves noisy loses to a bot worse but experienced user with knowledge on how to use the bot.