He could show that the remedial classes are working and still lose. It would be pretty interesting to see Bakugo deal with a defeat that's completely unrelated to Izuku
Now now, Izuku actually broke his limbs several times. Shoto and Tetsutetsu didn't cause serious injuries to one another so that's fine. ...I kidd, they should absolutely be reprimanded, for that and for the tons of collateral damage they and Juzo caused.
I do like the idea of this arc, to actually let us see class B's quirks and show that they are on par with class A. But the format of the arc does make things strech out a bit, at least when reading it week to week. I have a feeling that this arc will benefit greatly when it can be read through in a quick binge.
I wouldn't mind that either.