But is their form and technique better because the coaching is better, or because they wait an extra year before allowing the girls to compete? You can't tell that just by looking at the scores in their first season.
Part of coaching is being able to understand when kids are capable of learning skills with correct technique and form, and developing the proper foundation so that is possible. So yes. The coaching is better. There is no point in me doing what I do every day if it doesn't matter if my kids do things with loose legs, bent arms, and improper technique. It is by no means a given that kids will get a 33 or under in their first year at a compulsory level. And I have had kids in first year of preteam, first year of gymnastics doing straight arm kips. Is my coaching really not better than second year level 4s doing bent arm kips? I'm not saying I'm any sort of Olympic coach but it's kind of exasperating to think that "it really doesn't matter".
I think it does matter, but it might not be everyone's priority and to be honest I do not accept anyone who wants to sign up onto any group, although my requirements are not so much "talent" based but based on the energy level of the child and their ability to keep up with my conditioning program for that particular group. I have met some talented kids who couldn't keep up and would have been unhappy. It's not optimal for their parents to place them in that program then. Those children need a more laid back program. But I believe what I'm doing is best for the long term success of the kids I work with based on their current level and goals. Otherwise I wouldn't do it. And to be honest compared to the child who can sustain a lot more work and physical output, the progress of the kid who can't keep up whether due to emotional or physical limitations is likely going to stall. But that doesn't mean they shouldn't do gymnastics, they should just find the right fit and go as far as they can. I actually team a variety of groups because I coach full time, including rec. So I think everyone can do gymnastics. But let's say I have a level 4 group and an Xcel Silver group. I notice a child cannot keep up with the level 4 conditioning program. The requirements for compulsory are non negotiable. She will not be successful if she can't perform them. So I move her to silver where she thrives and gains confidence because every day in practice she is saying "look what I can do coach! I can do it! I did it!" And that confidence is letting her break through some of the previous barriers.
Sometimes the parents want her to stay in level 4, because they perceive it to be "better." But she would compare herself negatively to the more advanced kids and struggle. That is not "better". Now every kid is different. Some don't care much. So I always take that into account. But in other programs, their level 4 might be like my silver. Presumably this is why they score lower. So if level 4 is that important to them, they might go elsewhere. And that's really fine.
The only non-negotiable thing is safety. If your child doesn't care very much about scores or medals, then it's fine. But keep in mind what I said, 32-33 or lower means there are technique issues, and lack of conditioning and technique plays a major role in injuries. I am amazed to see the number of kids in compulsories with all sorts of braces that my gymnasts don't have or need. I constantly worry about overuse but with proper planning and preparation I find we thankfully avoid many of these injuries at these ages (optionals is different, hard to avoid overuse completely there).