I usually don't compare them because this is a MUCH different Kara. Unlike the Arrowverse one, this Kara is a fish out of water on Earth and only has Clark to help her learn her powers and how to interact with humans. In one version of Supergirl she goes by Linda Lang and was actually adopted by Lana and I guess Pete (since he's usually Lana's husband). I always thought an alternate earth of that Kara would be interesting to have seen either in this show or Supergirl.