I reckon that's a pretty fair comment in my experience.
There's probably a couple of different things/known issues to be aware of between a Tdi and Tdci - for example, higher mileage Tdcis often get Suction Control Valve issues and fuel quality is probably more of an issue too. Being aware of/preventing the turbo hose rub issue is another one. Also knowing your EKA code would be worthwhile as is being aware of the fuel tank breather location and that some servos seem to affect the alarm system. The only additional tools I carry are a diagnostic system.
That said, pretty much every issue I've had has been from driving too hard :wasntme: or from modifications -for example I gotta suspension clunk out near the Stoney Desert because the installer had put the rubbers and washers in incorrectly (and I was fair flogging along too).
End of my O/T diversion!

