But that my friends is GF. Incompetence taken to a level never previously dreamed of.
From what I heard, it is:
1) Another case of aircraft manufacturer promising a certain performance and range, then discovering that in reality and under Bahrain conditions, it can't work out. Same as the A340s when they first came to GF.
2) The aircraft manufacturer using unrealistic assumptions for calculating the performance that does not tally with the international standards just to make the plane look good.