It has been known for years that megahertz are a terrible metric to measure CPU performance. The peak of that discussion was during the launch of Pentium 4, where it was proven that the IPC was much worse when comparing to a previous Pentium even though it had a lot more the clock speed.
Itβs like AMD saying our megahertz are better than your megahertz. It may be true but people just look at standard numbers.