Nomad slaughtered 4 billion people across three planets with it's superplasma warp 15 torpedoes in a matter of hours.
And that's typical of TOS where entire systems were wiped out, billions of lives destroyed just to setup one story, and promptly forgotten about or paid little attention to throughout.
The death toll in TOS is in the 10s of billions of people, dozens of planets, several stars etc
Abramsverse, 6 billion Vulcans, a few thousand Humans at most, less than 100 ships and a Tribble. And the Tribble got better.