this year. However both the stats and the eye test clearly show that Pyne is better. He is a better passer and a better game manager. Now you might say that Buchner played with an awful oline. That is true but a QB that can throw decently makes the Oline and the RBs better because defenses are more hesitant to stuff the box against a decent passer. Defenses when Buchner started just stuffed the box all day long and dared Buchner to throw. In short, a decent throwing QB makes the whole offense look better. That was not the case with Buchner.
I'm not confident that Pyne can win games vs excellent defenses but I'm even less confident that Buchner can. Who knows, maybe next year Buchner will have improved enough as a passer to have a chance to start, but if not, ND should stick with Pyne or Angeli or even better, a good portal QB.