No, just quirks and luck. Talent and good coaching does not matter anymore.
Is the game quirky? You betcha! Is luck involved? Of course, you'd be a fool to state otherwise.
Talent and coaching are overstated. It doesn't matter if the manager makes the wrong call because they players should be able to overcome it. It doesn't matter if one team has more talent because the managers should be able to make the proper call to make up for the talent gap. If that call is wrong, well the players should be able to overcome it anyway.