There will always be a compromise when it comes to "universal" heads.
A large port will feed a large engine but will be sluggish on a small engine (unless it's high rpm application).
A small port will be zippy on a small engine and may feed a large engine up to a certain point and then the head needs more volume to meet the demands.
Choosing the cylinder head for the application is what's necessary. Unfortunately, there are sometimes situations that are dictated by circumstances.