Ultimately it was one word against another, but they used Spanish experts and looked at the video evidence. Read that summary I posted.
http://www.newcastle-online.org/nufcforum/index.php/topic,70035.msg3421881.html#msg3421881
I did, it's just what Suarez said he said was still racist however what Evra said Suarez said was vilely racist and he deserves much worse.