Do we know he was interviewed for the project? Think I have read somewhere that he was at least considered.
As to would he do better than Mac? First, not everyone thinks ANGC is a classic of routing, mostly because of the forced requirement to use the old home as the clubhouse at the top of a pretty steep hill. And, Ross was frugal, so he would be inclined to use it, too. He also did plenty of routings that worked out of a clubhouse on the corner, so some routing elements would probably be the same.
When the site was developed, it didn't all that many trees (look at those old aerials) so I doubt that would have swayed him against the site. He couldn't have anticipated them planting more over the years any better than anyone else. And, if so, why would he have designed 5 courses at "Pinehurst" which was similarly wooded?
What is most interesting speculation to me is, While Mac wrote about economy, etc., after 1930, did Ross work in that 1932 era reflect similar tastes and ideas? I don't recall much and perused Brad Klein's book. His clients were still mostly clubs in those days and perhaps he might have ended up putting in more bunkers, more in line with his work at Seminole, where he was admittedly trying to sort of catch up artistically with other gca's.
Anyway, no one can really answer of course, but a fun topic.