Well, there may be isolated instances of this, but I am in a state where the Xcel program is one of the biggest in the country. And I have never seen a BWO BHS on beam in Gold. Actually have not seen this in Platinum. So I guess that particular gym has that requirement, but it's very unusual.
It is true there's a skill range. Particularly in Bronze though, to me. Silver is pretty even here. Then Gold you start to see a lot of variation on bars. But if you meet the requirements you start from a 10. Going above and beyond doesn't help, and there are difficulty restrictions at each level.