A funny thing happened in transfer market

[ponzu]

A possible answer to Questions 3 and 4 is (see, I am thinking; I may not be learning, but at least I am thinking, and often out loud):

Having maxed out their roles and SA, the original owner did allow two players' Q to grow, so when I bought them, they were not at their original Q, but at an increased Q. The third player was still at the original Q that the owner acquired him.