Some facts:
1. PREFERENTIAL RWY SYSTEM 06-22Z
LDG: 06, 18R, 36R, 18C, 36C, 27.
TKOF: 36L, 24, 36C, 18L, 18C, 09.
2. There is a published ILS approach to 22
3. I have flown into AMS about 100 times, and only once (back in 1994) landed on 22
4. 2000 metres is plenty of runway to land a 737 on - for heavens sake, hundreds if not thousands of 737 operations are performed onto and off runways in the 1600 metre range every day of the year given normal ops, and in this case, if the ops weren't normal, I have little doubt that they would have chosen a longer runway.