First things first, I really cannot comment on whether a course looks, feels, plays like Pine Valley as I have never seen or played the course (outside of a few pictures). Same goes with Augusta National, as I have never been there in person. I would say that judging by the pictures I have seen of Pine Valley, Keisers' Dunes Club would be a much closer comparison.
A few notes on F.D. I have played probably 10 rounds out there. I make it a point to visit at least once a season, usually on a day trip from Lansing, to play 36 holes. Year in and year out they have the smoothest, fastest, greens (with plenty of contour) in the state hands down. They're arent my favorite greens in the state (Crystal Downs, Kingsly Club, Lost Dunes, High Pointe) but they are close. It is definitely a solid course and is a real treat to play. I would recommend it to anyone who is traveling through the Roscommon area or within a half days drive. I don't know how dramatic the elevation changes are at pine valley (judging by the pictures, it looks to have a decent amount of movement) but Forest Dunes is virtually flat, IMHO. Lastly, I would like to echo Mr. Flemma's thoughts as to the cleaner lines comment. In appearance the waste area's presented at FD are very "clean" looking. The front nine is rather narrow off the tee, and again I cannot comment on how that compares to PV.
In comparison, the Dunes Club waste area's are very rugged looking. I definitely think that it is a much more desireable look, and a much closer copy to PV than FD. They have one or two holes, the 2nd I believe(par 5) where the waste area completely cuts off the fairway, and forces the golfer to carry these areas on both the second and third shot (unless he goes for it, which as the caddies will advise you is quite risky). That hole really reminded me of PV, from the limited pictures I have seen.
I have not played LWS Blackshire so I cannot comment although I have heard people or advertisement who bill it as a PV look-alike. The article mentioned sounds more like a "special advertising" section than a real article. I have also heard F.D. billed as a cross between Augusta National and Pine Valley. There can be no doubt that such a statement is meant to draw those golfers who like hear labels that bill a course up to something it's not. For example, how many people do you know would rather opt. for a Nicklaus Signature (The Bear) over a Doak design (High Pointe, Black Forest) ?? While Forest Dunes is certainly a very nice setting for golf, with some fun and intriguing holes, I cannot see how it comes close to a comparison with Pine Valley. To me it would be like comparing Arcadia Bluffs to a Cypress Point.