I think it would be a good fight. Aerts can fight a bigger fighter that he is and still beat him. But i think Semmy is most vulnerable at the start of the fight before he finds his reach and gets in a groove. My gameplan for Aerts would be constate leg kicks to semmy and get inside and try some knees to take out the giant. Sort of like this.
http://www.youtube.com/watch?v=B5Dn-hhj7gw ..link box not working