Err...what about those wedding photographers who used to shoot film, and even wedding photographers who shoot digital now? I don't think they rely on burst rate to capture 'the' moment.
Something must be said about the capabilities of the photographer as far as timing is concerned. I might once again remind everyone that a faster frame rate does not equate to better photos. I shoot soccer and both indoor and outdoor events, and I've never relied on bursting to capture the moment. Instead, focus on the ability to read the situation and how things are going to develop. Of course, I'm not saying bursting is wrong, just that using it cripples your instinct for timing your shot to capture the right moment.
Go do a search on Google about DOF in relation to different formats. With the same lens, and the camera at the same place (different framing, essentially), you will get shallower DoF with a larger format. The same goes as you step up from 135 format to medium or large format.