Vees need more armor PER FACING, not more armor total.
So I've hit your JVN-10N Javelin with five medium lasers from the front arc. Let's see, that a location each for CT, RT, LL and 2 for the RA. Looks like I've penetrated the armor on your right arm, roll for critical. 8! You're out a hand actuator. Well, since you have no guns there it doesn't make much difference unless you want to punch something.
Now, I've also hit your Scimitar with five medium lasers to the front arc. Let's see, the locations are front, front, front, front and front. That reduces you from 21 armor to zero, with four points transferring, and since you've only got 4 points of IS, that means your Scimitar goes boom.
Looks to me like the number of facings matter.