PAB, I would also like to hear why you think this is. I respectfully disagree with you on this one.
I personally feel the open patterns such as ASAT, Predator and the like are much better patterns. Especially for treestand hunting. If you're tucked up into some brush on the ground, then some of the "designer" camos like MO and Realtree will do just fine and you have a dark background to help out. But things aren't always perfect situations in the woods and deer will come in from the sides, behind you and such. Caught out in the open and the "designer" patterns do not have the breakup capability that Predator and ASAT do. In a tree this is only amplified. Tucked up in a homemade ground blind its very difficult to pick out the Predator camo. Snow, same thing.
IMO, there is too much detail in the Realtrees and the Mossy Oaks. It looks great up close, but stand back 20 yards (the average distance to most deer you see in the woods). The detail of the camo no longer has any bearing on its effectiveness. It begins to fill in.
These are things I noticed while taking pics of my new Predator camo compared side by side with Mossy Oak BU. Not saying all this because I am using Predator this year. It is the reason why I am using it this year.
Just my .02 cents