I don't think I agree with the blanket statement that all boating fatalities receive more publicity than skiing fatalities. Some boating fatalities receive a lot of publicity, others don't. The same is true in skiing. For instance, the attention that has been given to the recent passing of Jamie Pierre inbounds at Snowbird is quite significant.
My sincere condolences to the victims' families, but from what I know about the fatalities at Vail and Breckenridge, neither is particularly interesting from an armchair quarterback point of view. It sounds like they were both blunt force trauma injuries that occurred iin bounds n rather unexciting terrain. On the other hand, there are a number of interesting issues in the Pierre death. Here's some discussion if you're interested in that sort of thing: An honest (armchair) discussion of the 11/13/11 Gad Valley avalanche accident.