The thing about information overload when doing your research means your bias is based on those numbers, which makes you a sitting duck as the stats will give you the favourite!! Take for example Manchester City at the moment, I can tell you for a fact that everyone that has done there research when it comes to their games of late has lost money...but if you went with your gut feeling and knowing their form you should be in the green!
So what am i saying, of course research might give you an edge but let's not be a blind followers of the numbers, sometimes let's think outside the box to beat the bookies as favourites don't always win.