Should the numbers be even for each class

[asdar]

HA, Engr, LA, Med, Max, Infil

I probably won't ask this the right way, but here goes. Say there's 600 players should they even out at 100 each?

100 infiltrators seems crazy to me, but if there's not 100 does that mean the class is underpowered?

All averages here, not meant to mean should they force this.

Max's, LA, HA I see as pretty even numbers.
Engr and medic I see as separate, but the two of them even.
Infiltrator the smallest number.

What do you all see as the optimum class distribution.