What's wrong with Otto or Brünnhilde?

I ask, as the results for the top ten names for German newborns in 2010 are in, and neither of those monikers feature (2009 results in brackets)

Boys
1. Maximilian (1)
2. Alexander (2)
3. Paul (4)
4. Leon (3)
5. Lukas/Lucas (8)
6. Luca/Luka (5)
7. Elias (6)
8. Louis/Luis (11)
9. Jonas (9)
10. Felix (7)

Girls
1. Sophie/Sofie (2)
2. Marie (1)
3. Maria (3)
4. Sophia/Sofia (7)
5. Mia (6)
6. Anna (4)
7. Lena (9)
8. Emma (5)
9. Hannah/Hanna (11)
10. Johanna (10) 

I would think that of that lot only Lukas is a dead giveaway for ethnic identity.  Thank are due to thelocal.de, where I found this.