They might be similar to some aspect such as analyzing before putting up your money, in trading we have some TA and in sports betting we have those who analyze the match to understand which one have a higher chance to win.
There are also those who blindly pick ups a random bets in sports, and we also have that kind of traders who would randomly pick alt coins or those that are being hype.
But in trading we are the ones who controls our money, while in betting it would be decided by those who plays.