Just look at your own benchmark. What were your mock scores in level 1 and 2 and how do you compare in level 3. If you score above or equal to your previous level mocks; then one can conclude that it is enough.
AM mock points are very subjective as you correct yourself…
The way I see it is that I am way more prepared than what I was for level 2 and since I passed level 2, I should also pass level 3.
You, sir, are an angel! I did no mocks for L1, 1 mock for L2 (CFAI one, which I did so bad that I was scared af for the exam), and about 4 mocks for L3. I was well below 50% for the L2 mock, and since I’ve managed to score above 50% for each of the mocks that I’ve done for L3, I’m good to pass! 
I also feel more prepared and more calm, despite not getting top marks in mocks like a lot of people seem to be getting. At least I know that I’ve done a helluva’ lot of preparation, and it’s just a matter of doing a bit more to pass next year, if not this year