This is exatly what Gary Shaw bitched Dana out for though. He said that Dana wasn't looking out for the best interest of the fighter by not cross promoting. Now what would be better for Diaz, fighting in EliteXC or Dream? Its got to be dream but because that could mess with Shaw's plans he aexed Diaz going to fight in Dream. It seems to me at least that he is pretty much doing what he said Dana was doing.
It's not the same thing from what I understand.
They had agreed on a previous date that didn't conflict with Diaz' upcoming EXC bout, then that date was cancelled and they moved the bout much closer to the EXC bout.
Sucks, but a far cry from the monopoly DW holds over his fighters. Diaz will be in DREAM soon enough.