Let's try approaching this from a different angle, and maybe without the hostility, ok?
It's 7:30pm on a Tuesday during the season, which game are you watching? You live and die with these teams, so you ARE watching one of them, right? And don't say flipping back and forth, because that dilutes both of them, and leans towards casual fan of both. Even if you're flipping back and forth, you're watching one or the other more, so...?
No, actually, in that case (i.e. Mets and Yankees games being on at the same time) I would watch all of both games. Thanks to my trusty DVR. My *dual tuner* DVR, you understand.

How many Yankees games have you watched, on TV or in person, this season?
How many for the Mets?
All of them. All that were broadcast, anyway.