Typhoon
Westwood has his girlfriend on the bag, and she doesn't know much about reading greens or actual playing yardages. Lee's having a pretty good season. And not because of anything other than he's striking it pretty good and his putting isn't betraying him like it did in the past.
Now, there is another aspect. A few caddies have been looping tour layouts long enough to know the greens like the back of their hands. That is definitely a huge advantage for a good putter, and making putts pays for the lifestyle. Another Lee said it best: There are two things in life that don't last very long: dogs that chase cars, and pro golfers putting for pars.
I don't think Trevino was talking exclusively about ball striking either.