NFL Football players wear pants
Soccer players wear knickers
Chess players can wear whatever they want. Some wear Tyrolean hats and lederhosen.
NFL Football players wear... etc. etc.
Chess players can wear whatever they want.
NFL Football players wear Shoulder pads
Soccer Players can't touch each other
Chess players don't need to wear shoulder pads because they don't have to touch each other.
NFL Football players can use their powerful arms to Block and Tackle.
Soccer players can't use their hands except to pick their noses.
Chess players can use their hands to move the pieces.
You don't need balls to play chess.