When I read that thread, my impression that it was more a comparison of Champion vs TA and extracting the most power from both thru porting. Both need additional work to achieve the best flow.
I am not a vendor so I have no interest in selling parts per se. I sell goats and sheep and collect social security for a living. I don't have any need to get people to buy car parts. I think it is relatively easy to build a ten second Regal without assigning any magic to the parts list. On the other hand, I think the hard part is build one that runs day in and day out without breaking stuff.
Good heads are definitely on my list. I would have chosen well ported iron heads for longevity but we all know that I am probably in the minority (as usual LOL). Hopefully the build quality of Champions is such that porting is not needed as they slightly outflow a well ported irons out of the box as I recall from the early tests.