Using groupings like top 5, top 10, top 15, whatever when doing these analyses on World Series aren't actually showing what people think they're showing. Working from a 50-50 chance to win a playoff series, the current format has a 12.5%-25% to make the WS. (6.25%-12.5% to wind) If you've got 4 of the top 5 payrolls in the playoffs 1 year, you're looking at a 50%-100% of a top 5 payroll team making the WS. (25%-50% to win it) Obviously, a higher payroll makes a team more likely to make the playoffs than not, but this makes the results suggest you have to have a high payroll to win in the playoffs when it's just a larger share of the WS lotto tickets in the bracket than any solid law of baseball playoffs.