Same question. I'm confused because they have same specs and available at the same time. Same thing with other models like Bullet 2 and 2C.
Edit: I've send email to Imou support asking what are differences between Cue 2 and 2C because specs on website looks the same. They replied telling me to check specs on website.

Thanks chinese people
Only difference that I see is that there are multiple lens options (which is great). But still, they could just allow this choice without creating new version. And same lens is available in 2 and 2C.