Just for fun I compiled the postseason standings for the last 20 years 2000-2019:
Here are the rankings by games played:
NYY 76 68 144 52.8%
STL 68 66 134 50.7%
BOS 57 37 94 60.6%
LAD 42 47 89 47.2%
HOU 41 38 79 51.9%
SFG 48 30 78 61.5%
CHC 25 30 55 45.5%
DET 25 26 51 49.0%
LAA 21 27 48 43.8%
ATL 16 32 48 33.3%
PHI 27 19 46 58.7%
TEX 20 22 42 47.6%
CLE 20 20 40 50.0%
OAK 15 25 40 37.5%
NYM 22 17 39 56.4%
WSN 19 17 36 52.8%
ARI 17 19 36 47.2%
TBR 16 20 36 44.4%
KCR 22 9 31 71.0%
MIN 6 25 31 19.4%
MIL 12 14 26 46.2%
TOR 10 10 20 50.0%
COL 9 11 20 45.0%
CHW 12 7 19 63.2%
SEA 9 10 19 47.4%
MIA 11 6 17 64.7%
BAL 6 8 14 42.9%
CIN 2 7 9 22.2%
PIT 3 5 8 37.5%
SDP 1 6 7 14.3%