The best way I can end this reply, is to simply quote the expert: "Mass isn't the problem - inductance is. So if you want faster transient response, ignore that moving mass
parameter that some manufacturers push - look at the inductance!". Common sense suggests your conclusion is correct, scientific testing proves it is wrong. Your response to that is to fall back on your common sense based conclusions. If you want to believe you are correct, go ahead. But that doesn't mean you are.