This isn't anything new. All members of the Army here and longtime CVH/Roth fans know how much Dave contributed to CVH.
We all know Ed was a genius guitar player - riff master along with blazing solos.
But he could not construct a song to save his fucking life. That's where Dave came in. I have no doubt Dave helped Ed structure his solos - as in "do a take of it here and then we are going to have that repeat again after the chorus."
This is why Van Hagar was so vastly different to CVH.