In short, I have adopted a formula for myself that your thinking as a bettor will develop when you study different sports and compare them with each other. Do you think this development really happens? If so, how does it manifest itself?
It will only overwhelm your minds in analysing different sports unless you are a super genius to remember everything. One does not need different sports in order to develop his data on one sports since basketball is different from football and soccer and they are not composed of the same team. Any data that you get in different sports is independent from each other so it does not really help except to eat up your time. Remember, each sports have also different leagues and categories, so it will only confuse a person since each analyis on every sports is not connected to each other.