Honestly, I've never heard any one says those words out loud.
What! Have you never heard of people using iPads to do music and video production? Is the A7 chip no good for music and video production on the iPad? I don't understand why you think that is an odd thing for me to say that I need the slightly better A7 chip for video and music production on the iPad.:roll eyes:
Obviously, if I want to do serious music and video production I'll use my Mac but the iPad and A7 chip is handy for on the move.
I think they meant that since you admit for serious production you'll use a Mac, and will use an iPad for on the move, then the A7 difference between the iPads shouldn't be that big of a deal.
Meaning, the 7-10% gain the 1.4ghz vs 1.3ghz A7 produces shouldn't make or break getting an iPad Mini or Air. Since you said it is for on the move, convenience work, the other differentiators (just the size of the screen, really) should be the deciding factor for what works best for you.
But we don't know your individual situation. Perhaps that extra bit of speed is critical to your work. Just don't think that the iPad Mini A7 is a slouch.