After running a few more tests last night, I must admit its starting to look like d&d does more damage to gts than blizz, and blizz does more damage to rax than d&d. Maybe the 2x2 - 3x3 thing is true. Not what I expected, but thats what the results seem to say. Got to be scientific about it.
Any thoughts on the difference between multicast d&d/blizz targeting a building and targeting the ground?
Here's the thing:
If you multi-select 9 mages or dks then target a building with blizz/d&d they all cast in exactly the same spot - the AOE is a perfect square, but if you target the ground *usually* they all cast at slightly different spots so the total AOE is more spread out.
BUT (and I have no idea why) if you put your 9 mages (or dks) in a straight line, either vertical or horizontal then multi-select and cast at the ground, they will all cast at the same spot as if you targeted a building.
This works out the same using either of the 2 multi-cast methods. It's weird
The difference in effect is quite marked. Thoughts?
-- edit --
this even works if they are in a diagonal line, but as soon as they are clumped together then they start targeting a random spot.