lol, im not lean and cut but i can run.. i still disagree..
What is your height weight and bf%? What are your times?
Anyone "can" run. Fat people run all the time. Heck fat people even complete marathons. My throwers even "can" do sprints.
Do you not think you may be faster if/ they you dropped bodyfat?
Its common knowledge. Fat isn't helping you. Its something that is part of your body that has weight and no purpose in helping your performance like muscle. So if you have 8 pounds of something on your body and you get rid of it you're lighter and your strength to weight ratio improves which allows you to run faster.