Sorry, but thats no true. Metro does have stores called METRO which are well known and they do have electronics departments (hence the reference to being able to buy "Metro" at "Metro"). Not internationally maybe, but in Germany, everyone knows Metro as a cash and carry store as well.

http://www.n-tv.de/img/67/674025/O_1000_680_680_metro.jpg

And as I said: even if Metro AGs claim is not valid, they are not one to piss off as someone who sells electronics or software.