Why is it that:

sensitivity 4.454545
m_yaw 0.022
m_pitch 0.022
cl_mouseaccel 0.1

is much less sensitive (and/or accelerated) than:

sensitivity 1
m_yaw 0.098
m_pitch 0.098
cl_mouseaccel 0.1

Isn't yaw/pitch just multiplied by sens, then an acceleration curve applied to the result?