"The idiotic idea that Saber people never played..."
Not my intention to infer that. My apologies. I was commenting on my background. I remember the difference between butterflies when I was nervous but ready to perform well, and butterflies when I was overmatched. And I get to see the same thing with my son (happily, he has more of the former and way fewer of the latter than I did).
If the sabermatician says that playoff stats aren't a large enough sample size to have predictive value and it's all random and everyone regresses to the mean, I just think, hey - would you have had any reaction to Carlos Beltran being inserted into the Braves playoff lineups through the 2000s? Cause I think he handled pressure pretty well. Better than other players. In a way that was repeatable and had predictive value. But the only way the sabermatician can acknowledge that is A) after the fact, as confirmation that he did perform pretty well or B) not at all, because he still only has 200 postseason at bats.
Which brings me to my last point: why do you keep talking solely about events that have already happened? Isn't the real value of sabermetrics its predictive value, and that you can predict future events better by taking a statistical approach?
I wouldn't apologize for this at all. I would argue anyone that touts "new stats" as the end all facts about players has never played any team sport at a highly competitive level. I only made it to the level of a walk on baseball player at a D1 school, and now I play slow pitch softball like the old men I used to poke fun at, but I have witnessed the same dynamics at all levels of serious competition, from 14 year old all stars, to high school ball, to traveling teams, to D1 play, and even in slow pitch softball. There is always "the guy" that anchors a team. Every time you move up a level, a few players step up and continue to be "the guy", and the rest of the players who were "the guy" at the previous level shrink into a more supportive role.
There is pressure to being "the guy" in a lineup or on a pitching staff. Some players can handle it, and some can't. Some guys that handled it in high school, or college, or in the minors can't handle it when they move up a level. Some guys can go back to being "the guy" once they get confident at the new level. I've seen it enough times to know it is fact of the game, and no amount of statistical analysis will ever convince me otherwise.