Irrelevant.
Some other class penances only take 1 or maybe 5 missions to complete.
It kinda balances out.
Aside from that, it would not matter if some class penances took 30 matches to complete (which none of them do).
The point i was making in this section, is that not only would you be able to clear all of the class penances within 100 matches (per class), but you would also be able to play with your regular loadout for most of those missions.