That sounds reasonable. The engine would shut down after 19 km slant range (probably a little less taking into account the acceleration phase). At an angle of 45° that would be after 13.3 km ground track at an altitude of 13300m. I see no contradiction to the flight profiles provided by AA.You should carefully read wikipedia. For example, 9M38 and 9M38M1 is different missile - first have burn time 15 sec, another have burn time raised to 19 sec. It give to missile additional 5 km range and 2 km alt.