I was talking about 1RMs. I'm sure you could've done 300x1. Anyway, those were just generic numbers. Most guys who aren't really small/light/old/injured will be able to hit a 300x1 squat at the end of LP. Brian Fox hit a 600x1. Maybe there are others who have taken it further.
I actually think I could run the novice LP and set new 5RMs on my squat even today.
It's just that in process of doing that everything else would go to utter shit: work capacity would be near zero again, would be lucky to maintain my bench, my deadlift would legitimately decrease, and I'd have to accept gaining fat at an exorbitant rate. I'd probably set some ridiculous OHP PRs, though. Because I don't train that lift.