999- having flown on both for several years, I disagree with your statement of having similar systems.
Interfaces though, do look the same, you will always find system operation on overhead panel and a couple of MCDUs on any modern plane.
Main difference of the two: MD11 does automatic system reconfigurations (as it is derived from the 3 men operated DC10, so the system architecture took over the job of man no.3)-in this particular field it is more advanced than Airbus (320-330-340). Everything else is 70ies technology.
Stall protection: Stick pusher has got nothing to do with FBW
Autothrottle: FADEC....ok, you can call that computer driven thrust, but FBW?
LSAS is a stability system that was introduced to make it more flyable, as it is a very unstable aircraft (long fuselage, small elevator, critical CG). To fly manually however, LSAS was a pain and always interfering with your inputs.t was, if I remember correctly, mainly gyro- driven. FMS capability was a lot less than today's airbus.
I could go on with the list- bottom line is: 2 very different A/C to operate and very different to handle.
Hope that helps.
Cheers, puh