The lead sentence is the summary and grabber "Only 52% of Google users click on an organic search result found on page one, and only 26% of Bing users do the same."
I've been aware for a couple of years that many 1-to-2 word queries on Google get no click at all - that is, up to 40% of users or so will reformulate their query instead of clicking on any result. So when you factor in these "no-click" users with the non-organic clicks, then the 52% number is not that big a surprise to me.
However, Bing showing only a 26% organic click rate is the real shocker. I honestly don't get that. Makes me wonder about the study's methodology.