German engineering is grossly over-rated: most WW2 Tiger tanks failed in action - not from enemy action but from engine and/or gearbox and drivetrain failures.
Not the first time I have heard this. The instructor on a specialist welding course I attended many years ago said that as soon as the Allies captured a Tiger Tank they were all over it examining it in detail and were astonished at the poor welding of the armour plates, which was simply not up to any sort of decent standard to withstand an impact.
