Watching football matches doesn't make a bettor a good speculator in gambling. There are people who watch less matches but can predict better and some times it could come as gifts. I know of people who get there games to bet revealed to them in dreams. Moreover some people who watch less matches have some gambling sites that analyse probable outcomes of games to win through bets. So it depends but not depending on who watches more football matches.
There are some persons that do not watch football frequently but could be better than those that have the whole statistics to make a better predictions. Mostly time it's not about the skill but about making the right decision.