No, I'm not agreeing with you. Velocity alone will tell you whether you're operating within the bullet's design parameters for proper upset and wounding/killing.
See if you can wrap your pointy little head around that.
Which bullet? A 60g Partition or a 500g Partition at 1800fps? Nosler claims the same "Optimum Performance Velocity" for both (1800fps to unlimited fps).
The moment you specify a particular bullet you also specify a particular mass - and thus, for any given velocity, its energy.
Either mass does not matter, as you claim --- or it does, as you also claim.
Be on watch for the white-coat men...