I think its to early in Marner's career to say he's the best. Right now its definitely AM . The key to AM right now is his size , he's able to compete at this level and have this type of success because he's physically ready for it. Marner even though he's also done well so far will see more of an improvement as he gets physically stronger and faster. The margin for improvement will be far more noticeable for Marner then Matthews in the next couple of years.