Can't comment on AA flights, but I flew FRA-LAX on LH on Aug 11. Flight was delayed due to security delays, though I saw none of it - then again I flew F so used the FCT and was driven to the plane and escorted aboard. In the FCT security is seamless - they even took my shoes from me and handed them back to me with a shoehorn!!! The security screening area in the FCT feels like The Wing. Passports/documents were taken away and everything (APIS) completed, and docs handed back as we left the FCT. I never saw a line.
The LH F ground handling in FRA is truly remarkable - redefines the travel experience.