Originally posted by Glasses
Not only that but the otd speed seems slower than what it was in the previous version of AH.
Of course they did, it is German and they hate German aircraft so they reduced the top speed of all German aircraft by 10% in AH v2.06
EDIT:
Just tested it offline at an altitude of 350ft. It decelerated to 521mph after a dive and to confirm it I slowed it down to 515mph and let it accelerate back up and it also reached 521mph. That doesn't seem like it is any slower to me.
For something fun, try this: Set all aircraft ammo to 100 times normal and then get a Me262 up to top speed at whatever altitude you chose. Then hold the trigger down. The recoil from the cannons took it down to 391mph sustained when I just did it. Took about two minutes of solid firing to so that though.