I agree, public benchmarks do have their uses as i noted in my reply:
"With the exception of a well explained, clear benchmark that everyone can understand and reproduce easily"
An internal benchmark indeed requires knowledge on the subject, but most of the times people at the mailinglists are quite helpful when you explain what you are trying to do. Especially when you post a benchmark which is not in favorite of their product.
I always say do your own benchmarking for your own use case.
The risk of a colored benchmark is quite high when benchmark is done by owner of product or by "fan" of product. With the exception of a well explained, clear benchmark that everyone can understand and reproduce easily.
An internal benchmark indeed requires knowledge on the subject, but most of the times people at the mailinglists are quite helpful when you explain what you are trying to do. Especially when you post a benchmark which is not in favorite of their product.