Bottom line. If Captain America is able to take Lights Out down to the mat, LO will panic as he experiences for the first time what it is like to be on his back while someone is pummelling hard punches and elbows to your face or trying to break your arm in two pieces.
If Capt America tries to do his dirty boxing and fight standing up, he will experience for the first time what it is like to go toe to toe against a world class boxer who is almost impossible to hit squarely and can knock people out cold with 1 punch. If he thinks the knockout punch he took from the Iceman was hard, he better not get caught by one of Toney's.
I like Randy Couture but I am picking James Toney to win by knockout stoppage.