Examples sibling rivalry in Russian examples

How do I translate sibling rivalry into Russian?

Movie subtitles

I gather it's a case of sibling rivalry.

Он так похож на Христа и так далее.

It's just sibling rivalry.

Это же просто братское соперничество.

There's still a kind of sibling rivalry between me and Robert. like there was when we were kids and he was still living at home.

Существовало некое соперничество между мной и Робертом.. когда мы были детьми и он жил с нами.