Hard to say, but I run a Mac Pro 6,1 that gets a score of 20,667 here:
http://browser.primatelabs.com/mac-benchmarks
-make sure to click on 64-bit multi-core-
and I run 5.1 sessions that typically only use 20-30% of the computer (measured on the PT system usage scale)
So in theory (
and that's a very big in theory), your laptop with a score of 14,597 should run the same session in the 30-40% range.
But, the Mac Pro is much faster at other things, and I don't run anywhere near as much realtime NR as you do, on the other hand, I run a lot of reverbs and have processing on every channel.