At the same time if the US Fed is really 'data-driven', then they should be raising rates next week.
A few hours out, it doesn't look like the markets are much impressed with Draghi's bazooka. Maybe that is because he warned that he doesn't expect to shoot it again.
I think it's because Draghi has become entirely predictable and entirely bully-able. We've got to be getting to the point where consensus holds the central bankers will keep shoveling money in until they lose the ability to do so, at which point the whole thing comes in for a hard landing. When that's the perspective, "shoveling money" means nothing more than business as usual.