Hello,
I'll engage the anecdotal question, yet I too am not positive that any more or less putts are "made" on that green than any other.
1. I think environmentally, it is the "slowest" physical surface on the course...In addition to its relative flatness, it's position at the end of the 2/3rds mark of the round, gives it a chance to "grow" before competitors play it. Despite its position in the lowest corner of the property, it receives an abundance of 8am - 4pm sun, yet the semi-protected site traps heat and moisture moreso than any green site except perhaps #4. This relative, but-still-marginal, slowness is a perceptible, nano-difference to elite golfers, which is vexing for that which they generally face all round long.
2. I think it is the smallest green on the course and therefore--no matter where the pin is located--receives more primary and secondary foot traffic around the putting routes to hole locations than any other....another X factor for the surgical elite players.
3. Someone mentioned this in part before...there are very few uphill putts available to the hole locations and places to miss from the tee. And while the green may be the relative, "flattest" overall, any downhill putt remains "Augusta scary," and prospects for error are higher ...players thus, are more attenuated to a birdie chance or par save NOT becoming a 3-putt bogey or double... e.g. the incentive to drain it with confidence is contextually limited by the fact that so many of its putts are downhill.
4. The binding, structural factor of all of this for me is the awkward "twist" of the contours (created mostly by the "fanned" downslope of the front trap) as the figure-8 green outline narrows to 9 yards in between front bunker and back fringe...It interrupts and influences what would otherwise be a continuous banked profile from the low right fringe all the way to the low left fringe. Also this bank (interrupted or not) causes putts to be arched sidehill, on the Z axis, more than uphill...those kind of putts that if they are charged, they can skate past the top side of the hole, and after the miss, start to fall downhill...I do see a lot of that (misses high) on that green, especially on that Sunday right-half f the green.
Lastly, while I haven't played the course, I have walked on that green in my bare feet for over 20 minutes. A paradox arising from my furtive entry onto the ANGC grounds some years ago.
cheers
vk