Not necessarily. My understanding is they would have some of the same things lead to variation: slight differences in available bulk materials, and material contraction during cooling (even compression molding uses pretty high temperatures).
Not saying that Vibram discs are (or aren't) more consistent than other brands. I personally have no idea. Just saying that they deal with the same types of issues as everyone else, even with a slightly different molding process.
Also, sounds like the most consistent thing about Vibram discs going forward is that they will consistently be out of production.
I agree, Vibram struggled with consistency as much as any other company. But they are running one more batch of multi-colored discs... so not quite out of production yet.