Hmmm; I have no idea. I have never stayed at the Sheraton Dubai Creek. I see that you can get the Sheraton Dubai Creek at Beatthetimer sometimes for around 75 EUR plus tax, otherwise (at least when I check) the Dubai Creek is way more expensive than the Deira one.
Either way, from what I have heard the Dubai Creek have better rooms, but I dont care when I pay 250 Dirham per night, hehe.