Because it is counted like
ASpd = 200 - Delay
Delay = SpeedMods * (WeaponDelay - ([WeaponDelay*Agi/25] + [WeaponDelay*Dex/100])/10)
SpeedMods = (100-ImprovementPercentages)/100.
So the Doppel card affects the speedmod by 33%. Speedmod becomes 0.67
Your original delay = 200 - 154 = 46.
With a Doppel your new delay = 0.67 x original delay = 30.82.
Now your new aspd = 200 - 30.82 = 169.18, rounded to 169.