I agree with Probe, it is not accurate to say the CS-100 is a B-scale.

737-700
128 typical 2 class
Mtow 154.5
$235.76

Cs100
108 typical 2 class (15.7% less)
Mtow 121(21.7% less)
$185.19 (21.5% less)

It seems the pay rates for the CS-100 match up perfectly with a lower MTOW.

However if seats are taken into account, one could say the rates are about 6% less than they should be.

But "the pay for the CS-100 is 6% low" is much less inflammatory and fun to say than " the CS-100 is the new B scale"