Not arguments there. But think about how a draft is build to be used. Its not for jumping over things, but being strong and pulling.
Im a short stocky person, im no leggy sprinter. Now you can make me train and diet and get as fit as I can, but whats the chance I will be better than someone built for it ? It just doesnt look good for me. Not that I can't do it, but its going to be much harder for me then someone who is really built to be a sprinter.
BTW I don't think anyone actually caught the fact that I have experience jumping and eventing draft crosses ! Its not like im talking out of my @ss.