I think it's perfectly normal to judge things as you see it. People didn't wait for a verdict when John Terry racially abused Anton Ferdinand, or automatically absolve Terry when he was found not guilty. A lot of people (rightly) believed Evra over Suarez from the start.
I think there's a good chance this whole thing is exaggerated, that Maguire's personal involvement is minor if not, and that nothing will happen anyway even if things are reported accurately. I also think it's perfectly natural to believe the reports when there without a doubt was a drunken brawl involving 20-somethings and arrests.