Just keep in mind that every highly successful MMA practioner today has been forced to be well-rounded. This is not the late 80's/ early 90's any more. [B] Back then there was a movement to see which discipline was most valuable and successful [B].
And that question was answered quite clearly back then: Jiu Jitsu.
Today, as you mentioned, cross training will prevent this kind of single discipline dominance.
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Last edited by Sportsman 2.0; 12-10-2012 at 02:31 PM.