The continuing story is not that Trump is barely at 40 in yet another state he is positioned to win, the story is that Cruz is barely at 30 at this stage! If Cruz would wind up with the nomination, he would have to be among the very weakest of candidates, if not the weakest, to ever get a major party nod, I would think, and probably by a lot.
But same with Trump. Trump has 37% of the total primary vote so far. Maybe he'll get to ~40% when it's all over, which would mean that he'd have the smallest share of the popular vote for the leading candidate for the nomination since....Jimmy Carter in 1976, and maybe before that?