Back in the early to mid 1970s, I worked part time as a starter at Ohio State's golf club. The Scarlet course was then around 7200 yards, par 72 and very difficult. The Gray was a bit over 6000, par 70 with a number of interesting holes, and a nice challenge for the average golfer. Many days I would have a walk-up list of an hour or more for Scarlet while the Gray was wide open. Men and women who couldn't break 100 from the middle tees on Scarlet on their best day would wait an hour for a 5+ hour round on the Scarlet. Even the ladies golf association, many of its members seniors, competed for scarce weekend tee times on the Scarlet.
Let's face it, most golfers in the U.S. not hooked on GCA.com like long golf courses, at least on the card. Developers I've known have been hung-up on 7000+ long courses not primarily because of ego, but due to a need to hear the cash register ring. Scarlet then could be played from 6200 +/- to 7200+, offering considerably more flexibility than Gray's 5600+/- to 6000, not to say anything about its cachet.