Levin made the mistake of going in so deep in for Cruz and mercilessly bashing Trump during the primaries that he now has no way of extricating himself without losing face.
Rush, was much smarter. He too would have preferred Cruz, but never went way out on a limb like Mark did. He also appreciates the fact that all the positions Trump took during the primaries were simply starting negotiating positions, they were not cast in stone. Trump is a deal maker so he sees every issue as a deal to be worked out.
He is above all a pragmatist, Levin is much more doctrinaire.
Levin lost me and I still listen to Limbaugh
Agree, although I think Rush was torn between Cruz and Trump in the primaries. I think he genuinely liked both for different reasons and will not need to hold his nose to support Trump now.