Its cool man, you are going to believe what you want to. I am going based on the numbers. Your argument can be used in the other specialities as well. Meaning, atleast half need to have below the average to be able to match into a specialty. The competitive specialties range from 200 to 1000 spots. Ortho has ~850 positions while Ophtho has 460. The step 1 for these 2 specialties are nearly equal (240 for ortho and 239 for ophtho) and the match rate for ortho is 80% vs ophtho which is 90%. 8/10 vs 9/10 is nearly equivalent. I would say ortho is slightly more competitive than ophtho but according to your logic, it is not as competitive as people make it seem. I think our ortho colleagues would disagree with that assumption. Anyways, I am done beating this horse. You can twist it anyway you want, but numbers say otherwise.
In the end, its about students self selecting themselves out of competitive specialities. I do not want to say specifically what scores for certain specialities out of respect to the rest of medical specialties, but certain Step 1 scores tend to gravitate toward certain specialties given the Step 1 scores. I know there are are exceptions where this is not the case but just an overall observation.
If you go into medical school thinking you can do ophtho with a little hard work. Think Again. I actually just interviewed applicants myself for residency and everything is looked at from the LORs, to step 1, research, electives and deans letter plays a big role as well. A lot of dedication is required to match. Good luck to all who are going to try. PM me with any questions and I will try to answer to the best of my ability.