The hip extension that you get from an Olympic lift can benefit the first few steps (0-5)of sprinting. Double leg bounding is probably a little more specific to the the latter part of the first few steps (4-8) especially if executed up an incline. The shorfall of bounding is the overload progression. Of course there is some carry over from each exercise into the different aspects of sprinting. The benefits can be slightly individual as well. For example if you have a weak synchronisation of rectus femoris, glutes, and hamstrings the OL will benefit you more than someone that has those traits inherent.
Does anyone actually do double leg bounding? In most of the prestigious Russian literature that everyone loves, bounding means alternate leg bounding, not double leg bounding.