All of you are misinterpreting Twitter's "features" here.

Most likely the root cause of this is an internal feature at Twitter called "per-country takedown."

If someone from Germany asked (and had a valid court order) that the Tweet be taken down for German users, then Twitter has the ability to disable the Tweet for people coming from German IPs.

I don't agree with this, I lobbied heavily against it while I worked there to no avail, but it's a solid explanation for why you wouldn't be able to see a Tweet in different regions.