The home advantage in Super Six

So far we have had 4 fights in Super Six, and each fight has been won by the boxer with the "home advantage". First we had Froch-Dirrell, and many thought that Dirrell deserved to win the decision over Froch. Next we had Abraham-Taylor, and while Abraham won decisively, Taylor was warned several times by the referee which may or may not have taken the play away from him somewhat. This didn't factor in against Taylor, who wouldn't have won anyway, but it may have against Dirrell. In the third fight of the tournament, we saw Ward outbox and rough up Kessler, but headbutting and fouling was involved, which likely wouldn't have been allowed to go on in Denmark where the officials are stricter. Last Saturday, we again have had a controversial outcome, with Abraham being DQ'd for a late punch against Dirrell. I won't say that it wasn't the correct decision, but the referee did seem to miss knockdowns and low punches. Had the fight been in Germany, Abraham's home country, it may have gone entirely different. Perhaps Dirrell would have been forced to fight on? A month from now we'll see Kessler fight Froch in Denmark and Froch expects that he will only win by a knockout, knowing that he's probably not going to win it on the cards against the "hometown" fighter. How much of a factor has the "home advantage" been in the Super Six tournament? Ideally, all fights would be on neutral grounds but this is not a possibility because Europe vs USA is one of the drawing cards of the tournament.