It is but why do you think it happens this way?
An agent gets probably around 10%? If you make 5mil or 6mil it doesn't give him much extra. If it does happen like that, it's probably more about making precedences for the future where they will say, Scherzer got 270M, then of course someone like Price will get 300M.
IMO it should be closer to the real estate market where it's mostly about quick turnaround and not waiting months for getting 10k more.