It seems a lot of people here were a bit taken aback by Heuer's comment at the end. Both teams spent weeks vetting the results and prsentation, and the decision not to claim discovery was taken very seriously. There is still a lot of work to do to polish up the statistics. Note how the different physics channels each have their own significance and weights, as discussed pretty clearly in the CMS presentation. Combining the overall significance from all channels is not a trivial task.

To answer your question: we have not shown that it is a higgs boson. Essentially today's result is simply that we observed a lot of objects decaying from a mass 125GeV. More than we expect from the Standard Model (w/out higgs).