Check out the CMU simulation:

"A few years later several people discovered that some of the smaller suited connectors (such as 87s and 76s) sometimes played better than their larger cousins (such as T9s). This reversal of the 10-player showdown results was both surprising, and held as a professional holdem players' trade secret by many. This U-Shaped effect is clearly visible in the HE Table 1"

http://www-2.cs.cmu.edu/People/mummert/poker/