Yes what Alpha I said was the Open Alpha (I just used the cup, not the baffle).
That's no significant Superior on 3 of my Fostex rp phones.
Sub-bass clarity and extension, mid-bass body: Open Alpha > T60 > T20mk2 mod
Sound tightness, punchy, dynamic: T60 > Open Alpha > T20mk2 mod
Sound stage width: Open Alpha > T20mk2 mod > T60
Sound stage depth, separation, overall clarity: T60 > T20mk2 mod > Open Alpha
Instrument texture, imaging postion: T20mk2 mod > T60 > Open Alpha
Openness, airy, vocal intimate, immersive: T20mk2 mod > Open Alpha > T60
Summary:
T60: fast, dynamic, fun, clarity, 3d imaging.
Open Alpha: bass quality, wide, other factors in between the brothers.
T20mk2 mod: Open, immersive, texture, position.
My personal preference: T20mk2 mod > T60 > Open Alpha
Edit: My Open Alpha did not fully mod. It's not in a final stage. But the T20 is. Both with the D7000 pads.
The comments of T60 above, which is with a mouse pad baffle ring (C shape) mod. With stock pads.