Based on recent experience a lot. I was booked on the CPH PVG flight with my son on the 26th March, due to the weather in OSL on the 26th we missed the flight and were eventually rerouted onto LH via Frankfurt. The booking office in BGO tried to get us onto the next SK flight but the only vacant seats were on the 1st April, all the other days were overbooked. Not fussed A380 beats A340 any day. The return flight on the 5th was cancelled so we were put onto the LH flight via FRA, again A380 was a nice upgrade from SK A340.