The next simplest answer: the playoffs became a "crapshoot" when more teams were included.
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"Next time, no sausage in the stuffing, you sadist!!" |
A better, but still relatively simple answer (which can always be trussed up like a turkey in the manner than Sean Penn was purported to have done to Madonna one evening when her banshee-like rejoinders left him with a splitting headache--and with what the great Akron meta-punk band Devo quaintly referred to as an "uncontrollable urge"...) is that the crapshoot has been a half-assed asymptote for lo these many years without anyone taking notice of it.
(Half-assed asymptote...are we describing ourselves, or is there a metaphorical method in our madness? We won't regale you with the type of glib pseudo-characterizations that can be found in Jonah the K's gourd vine...figure out that literary reference, all ye whose eyes are watching God!!)
Naw, it's just our quaint way of rephrasing the numberologist's favorite (and not infrequently useful...) catchphrase "regression to the mean." In this case, we mean to say (and are probably not as mean as some think when we are actually saying it...just sayin'!) that a half-assed asymptote is simply a series of recorded events that inevitably trend, not to zero, but to a state of even-steven--or, as we who unnumb the numbers like to say: .500, 50-50--your garden variety coin-flip.

After all, look at how the playoff results have slithered from a high correlative (significantly less invasive, as you know, than a high colonic...) in the early years to a point where, in the almost present-day, the results are closing in on 50-50.
Convincing? Hey, of course. You can see how time and chance have conspired to chip away at the "advantage" that the teams with better WPCTs had over less successful competitors in the increasingly feverish post-season.

Though the "front end" of these two charts show some deviation (or is that "deviance"??) from one another, what we have on our hands here (aside from the blood of kings and concubines, of course...) is a big, fat, slow (and possibly dumb, for that matter...) regression to 50-50.
So an increased number of teams in the post-season is not driving the results in any way that's different from what was happening when there were fewer teams in the playoffs.
Now we haven't accounted for a number of other items here, such as: how much better/worse (in terms of WPCT) were these opponents; or differences in league quality; or perturbations such as dynastic behavior (of course, "dynasties" are not guaranteed to have the best WPCT in any given year, though the WS chart above shows a couple of interesting upticks in the 20s and 30s as a result of the New York Yankees--a phenomenon that is not repeated, by the way, during their 50s-60s dynastic period).
