Robert Brout was also a major player in developing the theory of "how particles acquire mass", but he died in 2011. That's worth its own story.
At a talk @ Stockholm University earlier this afternoon, the selection committee chair, Lars Brink, was asked about the issue of credit to CERN for their role in the experimental verification of the Higgs particle. He drew the audience's attention to the citation ... "for the theoretical discovery of a mechanism..."
To me, the words of the citation seem to have been very carefully chosen. There was evident enthusiasm regarding the CERN results, and for the potential for new results as they move to higher energy. I saw no evidence (other than the target of the award, to theory) to conclude that there was an apprehension of bias towards theory over experiment. But this is my opinion, based on one observation (n=1).
Conflict disclosure: I am an experimental chemist.