Only those on scene could actually answer the question. For those of us in the bleacher seats there is no simple straight forward answer. Generally more water is a goodness but there are all sorts of exceptions and complications that vary by circumstances and we just don't know enough to reliably make the call.

Edit/Add - a lot of water is a variable quantity, if you only have enough capacity to turn a lot of water into steam without getting everything covered again that may be worse than leaving things uncovered. When talking megawatts of heat generating capacity the definition of a lot grows very quickly.

-Eric