I'm not sure what you mean by the 1 & 2 are too close. If you mean they closely resemble hub doubling, they do not. This is about as classic a case of MD as you can get. No separation, shelf-like, flat, and it subtracts from the devices.
Well this thread was confusing me and I usually go cross-eyed looking at people supposed DDR / DDO and various other "errors". So I did myself a favor and Googled "hub doubling vs machine doubling" and came up with this VERY helpful site. I finally understand why the hub-doubling snobs pooh-pooh MD. Bookmarked!