One concern of mine with AB on the LR is that, yes, you get the improved 0-60, but from what I've read and seen on YouTube videos, the general consensus is you don't get that full useable torque at all speeds. Meaning it's boosted down low but not across the entire spectrum. It still feels worth it for a cheap upgrade compared to the work you'd have to do to an ICE for similar 50hp gains, though.
In my experience it's exactly the opposite. When you add AB to the LR it makes it equal the P other than under 60. Yes the boost makes it faster from a stop but it makes it much faster on the highway and higher up passing speeds. This is why you'll often see roll races on YouTube between the P and a boosted LR and it's nearly identical. I've modded many cars in my life and no mod was as huge as tapping that button on the Tesla app. Enjoy!