Space marine Chapter Vehicle bay size?

I’m currently working on my blood angels successor and one of their bit traits is that they do not have much in the way of armor. Sure they have many impulsors and rhinos, and a ton of stormravens, stormhawks, stormtalon, and storm speeders but only 4 land raiders, 6 predators, 3 gladiators, 2 repulsors, a vindicator and a whirlwind.

Just how understrength is that? Am I reaching too far into comedy here?