He got 4% return over 10 years. Also he didn't actually get 4% he adjusted the figures to do that.
well not every one is 1.20, some are 1.10 / 1.15 so nice skewing of the stats there.
Oh and it has happened 521 times in 10 years. Good luck putting on 300 bets in 1 year.
Performance of favourites of odds 1.20 or lower
If you had bet £1 on every club favoured at odds of 1.20 over the last 10 seasons
well not every one is 1.20, some are 1.10 / 1.15 so nice skewing of the stats there.
Oh and it has happened 521 times in 10 years. Good luck putting on 300 bets in 1 year.