I can see sort of where you are coming from - with what appear to be stubby arms ( for a more diminutive unit) and the nose-button type thing. Maybe one of these things that's supposed to appeal to general Star Wars fans rather than exclusively KotOR fans? Like the re-hashed Galactic Empire insignia, and the stormtrooper-esque armour. I'm expecting a lot of those, unfortunately...
But as Alkonium says they aren't precisely the same - I agree they are more threatening, more battle-ready than the pit droids...an earlier variant?