Spit/109 sea level speed comparisons in 1.08 beta patch

[Matt255]

High alt speed spit slightly faster
Low alt 109 slightly faster
Roll: spit rolls slower at high speeds but about same at slow speeds. The 109 more stable at slow speed roll due to slats.

I read exactly the opposite.

Spit faster at low level, 109 faster at very high altitude.
Spit rolling slower at very low speed, both Spit and 109 ailerons becoming very hard to move at speeds above ~ 600 km/h / 400 mph.

Spits controls overall slightly less heavy at high speed.

I also don't see what the 109 slats have to do with rolling or why the plane would be more stable because of them.