DVDA,
I remember seeing parts of The Blue Max movie when I was young, but I think your making a connection between the Blue Max award and status of Ace which is not correct. Sharky summed it up well. It was widely held on both sides of the WWI and WWII that 5 kills qualified someone as an Ace, but additional awards were often given to Aces who showed exceptional merit. Each country would have its own standards for the decorations they gave to their "Ace" pilots. For example, the German Knight's Cross was given at 50 kills early in WWII, but later in the war, over 100 victories were required. I think that Erich Hartmann (352 victories) didn't get his Knights Cross untill he had 150 victories. Becoming an Ace (5 Kills) was not a higly decorated event, because it often took many more victories to obtain a distinguishing award like the Blue Max (WWI), or Knights Cross (WWII).