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Brunei English belongs in what Braj Kachru has termed the 'Outer Circle', places which had a colonial relationship with Britain or the USA and where English has some sort of role as an official language. In Brunei, for example, English is the medium of instruction for most subjects from the fourth year of primary school onwards, and it is now being introduced as the medium of instruction for some subjects from the first year of primary school.
In contrast, English in Germany belongs in the 'Expanding Circle', places with no colonial relationship with Britain or the USA and where there is no official status for English. Nevertheless, English is widely used in Germany, as it so important in the modern world for commerce and also for access to knowledge.
In more traditional terms, we might say that in Brunei, English is a second language, while in Germany it is a foreign language. It will be fascinating to compare the status of the language in the two places.