The Higgs results were reproduced because there are two independent detectors at CERN (Atlas and CMS). Both collaborations are run almost entirely independently, and the press are only called in to announce a scientific discovery if both find the same result.
Obviously the 'best' result would be to have a separate collider as well, but no one is going to fund a new collider just to reaffirm the result for a third time.
Obviously the 'best' result would be to have a separate collider as well, but no one is going to fund a new collider just to reaffirm the result for a third time.