It’s simply the fact that he narrowed it down to two, since TV has arguably never had as many monster-fighting characters before.
Horror is alive and well on the boob tube, and there is no shortage of supercool weapon-toting badasses putting evil down.
Now, that wasn’t “quite the claim” because Stephen King happened to misspell the name of Norman Reedus’ redneck warrior Daryl Dixon on The Walking Dead, although I’m sure some fans had a fist to shake at the author for the typo.