I flew this route a couple of months ago.
LAX-YYZ-TLV on AC, YYZ-LAX had lie flat on J
TLV-ZRH-LAX on LX, had lie flat on J on all segments, TLV-ZRH has 2-3 flight a day but only one uses a340 with lie flat on J.
Service was equally as good. Food better on LX. Plane on the TATL segment better on AC, only because it is newer (788)