Performance of the L115 and Mini Scout

Personally, I feel the stats for the L115 and the Mini Scout—especially their bullet velocity—should be swapped.
Why is it that even with an extended barrel, a sniper rifle designed for ultra-long-range combat only reaches a bullet velocity of 878 m/s?
Its rate of fire is second only to the Mini Scout, but for a weapon intended for ultra-long-range combat, shouldn’t bullet velocity be more important than rate of fire?
As for the Mini Scout, since it excels in every aspect except bullet velocity, there’s no reason to use any other sniper rifle. The only reason to use another sniper rifle would be if you want to get kills from over 800 meters in maps like Firestorm.