Tiers:
He's saying that job A is more spiritually fulfilling and morally rewarding than job B, and therefore he'll choose job A instead.
Since it's hypothetical, the point is that it doesn't hurt to have rock and mina come out of bottom tier. Those that chose to stick with rock and mina probably made their minds up long time ago and same with those who won't approach them at all.
Which would be saying "what's the problem if Job A all of a sudden pays $2,100 as well ?"
JFs:
Raph's JF nets him +30 damage and knockdown, otherwise if he misses the JF he does decent SG damage but is at -19. That JF seems more like a punishment for failure (becuase if you dont' even attempt it you are at - frames on hit) instead of a "bonus". IMO these type of JFs should be eliminated.
Lastly: Training mode should have a just-frame practice/timer type assistance. I understand that the beginning of the white flash is the timing, but it doesn't show the leniency nor the mashability.