Soft, hard, shmard. You cannot win consistently against good opponents with our kind of QBing, not any more. Defense throws in it when QB mistakes happen over and over. As for quitting, think TT, Wis Gordon game, 70-31 Wis game, etc. Ugh. Those weren't Riley, and they were absolutely the worst (other than maybe the Colorado game when we then played Miami and stunk up the place two games in a row). As for the Iowa and Purdue games, someone that didn't like what happened must explain what a coach was to do about the absence of a real QB. Yell? Yeah, that really works (Wisconsin -- there goes Gordon!).
I played college b-ball, and sometimes you just don't have it, and it's not a question of hard and soft. It really isn't. I believe in effort, and sometimes it just isn't there when the offense deflates you time and again.