My recollection (its a long time ago since I studied M/S FFs) is that the "ones and zeros catching" refers to the fact that if QN is High, the J gate is open. If C is High, a brief High pulse on J will set the Master FF. So when the Clock goes Low, Q will go High. So ones are "caught" by the master. The same applies to brief Highs on K if Q is High. I assume tis is what they mean by "catching zeros".
Whereas, with an edge triggered FF, the states of J & K are only sampled at the clock transistion. Thus a brief pulse on J or K between clock transitions will not be "caught".
If you understand tha above, you should be able to draw the waveforms.
As I said before, the term "level triggered" is not a term I would use. It is ambiguous.
Len