I guess I should have phrased it better -- that both are basically trying to "improve" upon perceived faults in vanilla JS, as well as adding perceived useful functionality. It's just that "improve" and "useful" is an implementation-specific definition that's defined by the particular project owners.

Thanks for the thorough info though, I've only used TS a little and CS none at all, though from what I've seen I'd side with you in that CS tries to be too clever and/or is too foreign for my non-Ruby brain, whereas TS more closely melds with my skillset.