Roger that.
I accept that he preferred the Glock platform and was not fond of the Sig. Call it unfamiliarity perhaps. However my son did give me a number of reasons why he didn't like the Sig 226. He came right out and commented on slide height and the height of the bore axis on the 226. He preferred the recoil impulse of the G17 over the 226 and said he could get his sights back on target quicker. He said that he preferred how the G17 felt in his hand over the 226. Now that could easily be attributed to his familiarity with Glock.
One big turnoff he described was the de-cocker on the Sig. Not that it was a problem but that the range commands during the competition were not uniform across the firing line on who and when competitors were required to de-cock. Obviously an administrative problem but my son put partial blame on the gun because it had that function. Since this was a live fire competition of Police Cadets ranging in age from 14 to 21 (In my son's Post they range from kids to active duty military) there was a police officer shadowing every cadet on the firing line. They were on the State Police Academy range and about 15 cadets were on the firing line at a time. It sounded like the commands echoed by individual assigned RSOs were inconsistent across the line.
As a side note my son experienced a double feed malfunction while competing. He knows how to clear it but the RSO took over. His RSO struggled for a while then got another RSO to help her. The two RSOs continued to struggle and finally they cleared it with one holding the frame and the other working the slide. I can't quite find the words to describe how I felt listening to my son tell me about this incident. He recognized and acknowledged how screwed these individuals would have been if this ever happened to them in real life and he described to me what they were doing wrong. He said, "dad neither one knew enough to lock the slide open then the magazine will come out". I timed him yesterday doing double feed malfunction clearances and he was consistently between 4 & 4.5 seconds to get the gun back up and at the point. He is a respectful young man and followed the rules but I bet he wanted to say, give me that thing and I'll show you how to do it!