Most of us aren't building Darin Morgan type engines.
Generally it comes down to the head that's is the best compromise and is readily available to us.
But still functional and for most they would have a hard time getting close to that level of port volume mismatch.
Not saying velocity ain't important, but generally it's not a thing most of us have the ability to do much about it, like many important functions of an engine. The problem I generally have with people uses of the theory of velocity is they generally push people towards going too small in fear of too large. And especially without any idea what's ideal in the 1st place. And don't even factor in other issues cause they got their velocity blinders on, like cam size for a given head to reach power goal, or possible extra hp and usable rpms over the original plan, cost effectiveness, convenience etc..
Most of us aren't building a single purpose no compromise race car that max efficiency it the utmost importance and gonna have custom ports that are epoxied to squeeze every last drop of performance.