Both may be liberals, but there’s a world of difference.
Seinfeld - hilarious, focuses on the mundane, reasonably cute, married to someone his own age.
Letterman - repetitively not funny (top 10 forever, following unfunny everymen, and doing stupid experiments), goes into politics (except Clinton! He was above it all with Clinton), shacks up with far younger girls (like Trump - they have something in common!) and diddles anyone, and is UGLY.
He's sixty-four. She's forty-six.
But the numbers are almost the same!
Frankly I never understood Letterman. He just was not that funny. I used to watch Late Night and he was definitely very hit or miss, mostly miss on his monologue and everything else.
I never could figure out why Johnny Carson thought so highly of him and also why Carson thought Letterman should have been his replacement. Carson never would have let his political leanings interrupt or ruin his act and standing with his fans. By the way Johnny was pretty much a New Deal Democrat.
Letterman is a bitter old man now and no longer relevant anywhere.
Jerry Seinfield knows what is funny and how a comic should work and his stuff is funny. One of the reasons Seinfield is still a top show in syndication even after being off the air for for over 20 years. Seinfield reruns still command about $1 Million and episode in syndication making it probably the most successful sitcom ever and make Jerry rich beyond his dreams.
jerry is 64 and his wife is 46.