The fact is: unlocking the 6950 turns it into a 6970 at equal clocks. So I don't understand why anyone would try and recommend NOT unlocking the shaders in the 6950. There's no reason NOT to actually.
Has anyone posted benches of 6950 vs. 6970 at equal clocks other than the frequently cited WORLDEXCLUSIVE 6950 numbers, for which I didn't see a direct comparison to 6970s, just 6950s with 6970 bioses vs unlocked and/or overclocked 6950 bioses on a 6950. Anyone have a 6970 and have posted benches (3dmark11, vantage, etc?)