Coincidently, I was just about to open a thread on the same theme, having flown intra-European business class on LH yesterday for the first time (including a connection in FRA).
[and I had the prosciutto with melon as well (on FRA-VIE)]
My conclusion was that BA and LH seem to conspire about low standards, and the main difference is that on LH everybody speaks German very well...
I booked TK for going to ATH in Nov.