The problem is, there are too many variables that need taken into account to get realistic results. I'm sure the default development rates are being tweaked every version, but who's to say what conditions are being used.
Feeders alone can be set up in an incalculable number of ways, thus affecting drafted players and development. Prior to these aging test sims I sent a week trying to get the feeders to produce the real life amount of ~63% College players, ~26% High School players, and ~11% previous years fail to sign players.
That setup gave me 96 College teams : 80 High School teams for a 6 level deep minors. Which is incredibly far away from what the game creates by default. I expected development rates would need slowed down with so many more college players being drafted, but it was quite the opposite.
An no matter how high pitching aging is set, there are always too many 35+ year old pitchers in the league.
And this doesn't even touch on what NoOne said about AI evaluation, which was stat heavy in this sim at 25/50/15/10.
So basically I give up
