football data ratings...?

[jl294]

I'm sure many of you are familiar with football-data's rating system.. http://www.football-data.co.uk/ratings.pdf I'm just wondering what peoples opinion is of this? Narrowing down ratings to -2 to 2 give a yield of 10%, which is pretty good for any system. People might say it were a fluke or something perhaps, but it seems evident that the method used can take 'some' value off bookies and identify winners more often than not. Applying the system to multiple leagues could potentially produce 100+ points profit a year (which is amazing).. Obviously, each country has different enviroments, so the research would have to be put in to get a new equation for the resepective contries..... Any thoughts? Cheers.

[jl294]

Re: football data ratings...? Also, do you think the methodology can work on other rating procedures? Perhaps ones more complicated (Over 2.5 ratings etc..)