According to the stats at
http://www.playoffstatus.com/mlb/nationalsosag.html the total winning percentage of Mets' opponents for the full season is 49%. That's the same as eight other NL teams (to two decimal places, anyway). Yes, the NL has more teams with losing records (than the AL this year. So what?
Winning % of the opponents of the games they've already played: 50%. Winning % of the remaining opponents: 45%.
Yankees vs Mets not even close, huh? Hmmm... let's see what the power rankings at MLB.com have to say... Mets #14, Yankees #15 (using the expert rankings column in the link::
http://m.mlb.com/power-rankings/)
CBS sports: Mets #11, Yankees #13.
http://www.cbssports.com/mlb/powerrankings/
USA Today: Mets #13, Yankees #14.
http://www.usatoday.com/sports/mlb/rankings/
Sports Illustrated: Mets #13, Yankees #14.
http://www.si.com/mlb/2016/09/07/30-power-rankings-week-22-twins-mets-giants-red-sox
Considering the amount of injuries the Mets have had to deal with, this fan is happy to see meaningful September games with a real shot at the postseason. Yankee haters gonna hate...