I thought that the ability to navigate with VOR radial info was a prerequisite for IFR clearance.
Things have moved on a bit since since Loran, Consul, and VOR radials.
Air Bus have 3 IRS position updated by twin GPS receivers or DME/DME.
You can "navigate with VOR radial info" using RNAV and display the VOR radial for cross checking purposes.
As previous posters have said, whether it's Air Bus or Boeing - they have different solutions to certain aviation problems. e.g. :
The Boeing has a vicious nose up couple when applying TOGA thrust during the GA from a low powered approach - which can catch the unwary out.
On the Airbus, the unwary can easily get caught out with TL / auto thrust mismanagement.
Get to know and understand your aircraft.
If you get left behind - who's fault is that really?