Gavra: There is only one Deveikus concept. And yes, it is mifurash Midrash like you qouted (as well as many other sources). Both Litvaks and Chasidim believe that this is the core of Judaism. The difference between Litvaks and Chasidim is to whether Limud Hatorah is necessary to reach this Diveikus or not. I personally am a Litvak.
Do you really believe that all MO sincerely believe in this Midrash? Do they really believe that a Talmid Chacham who learns Torah all day is on a higher spiritual plane then the layman who works? It’s clearly evident from their general lack of Emunas Chachamim that they actually do not believe this.