Actually, the open orders are not all that much different between airbus and boeing, boeing has 2101 open orders for the 737 family and airbus has 2318 open orders for the a320 family.
We operate both fleets and found that boeings are quite cost effective and still can compete on many profiles against the a320 family.
I just wish the 737 had the same spacious cockpit as the airbus, it is getting too small in there (or i'm growing too fat, damn company food).