No, they are not. The equivalent of the BFU is the AAIB - if you wish to make comparisons you should compare the BFU statistics with the AAIB figures.
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What!!? The AAIB doesn't publish glider accident statistics - they leave that to the BGA. I used the BGA numbers for 2011.

ps an earlier post of yours refers to the "German LBU"; I'm aware of the LBA, I know of the BFU but your reference to the "German LBU" is puzzling.

The German LBA is their FAA equivalent. The BFU is the NTSB/AAIB equivalent. The "LBU" was a typo.

The numbers I used are available for anybody to read and analyze. The differences are so huge, there's no way to come up with a different result. If you disagree, go read them and do your own analysis.