Not necessarily. Many times a third baseman plays level to the bag while a SS plays deep in the hole. This has two effects. First, the ball gets to the 3B quicker than it would get to the SS. Second, a ground ball hit to the SS's right might only be caught maybe 30 full feet deeper than where the 3B plays. Also, unless your first name is Brooks (yes, I am old), almost all 3B throws are straight-forward, whereas a SS might have to throw off balance.