In the sense that the "Clown Car" of 2012 was dominated by the Tea Party or"crazy" types, while the Establishment candidate (Romney) was the front-runner all along and the eventual nominee. Contrast that to 2016, where the dynamic seemed to be the other way around....
-Looks like Trump took the vast majority of Gingrich's base, and a good bit of Mitt's and Rick's.
The 2008 primaries are a better comparison with 2016. Trump took a good deal of McCain's base, Romney voters were the most likely #NeverTrump voters, and all Huckabee voters voted Trump or Cruz (in WI, Trump, in IA, Cruz) and Trump in the general.