Marc,
It's a fair point but then that isn't a debate about width but actually one about length. If, again, your contention is that average golfers will tear up anything at 6,5000 yards if width is provided, I'll refer you again to my previous comments about longer grass frequently keeping golfers nearer to the centreline but simply preventing mishit shots from bounding on to acute positions.
All of this however sees us drift towards the very real danger of again associating quality with resistance to scoring; an insidious trait, in my opinion, of the post Golden Age era. I'll be the first in line to argue that a course with no challenge would quickly become dull but, regardless, as a three handicap, I've still yet to discover these mythical courses which are apparently too easy. They must surely exist because any number of golfers that can't usually break 90 tell me about them regularly.