XC: Both won the National XC championship. Both in a course record (different course and different history). However, Aaron won by 7 seconds. Colin only won by 2 seconds. I give the nod to Aaron.
Aaron’s junior year was better than Colin’s (1:48, 4:00, 8:01 (3000m) for Aaron), so not far fetched that he will run faster than Colin did in his senior year.