I'm changing the parameters? I'm having a discussion. This isn't combat.
I actually don't disagree with you. Top 15 is probably about the bottom of what you could recruit if you're going to win a NC, before the transfer portal, which can change everything. But I think it remains to be seen how much the portal can change that (i.e., can you recruit an average class rank of 20, but win a NC by killing it in the portal? We don't know what yet).
I just pointed out some of the outliers (Clemson, Miami), since it was mentioned. Lemming was what we had to go by back then. Yes, he was pre-industry rankings, but let's not pretend the current sites are expert evaluators on the level of coaches (which is why they're not making a lot more money on a coaching staff)...they follow the offers....which is exactly what Lemming, SuperPrep, etc. did. The fact remains that Miami's dynasty was built on classes outside the top 10 and the best recruiting class ever wasn't ranked in the top 10 by the people who ranked classes at the time.
Honestly, if Tennessee signs classes ranked about 12, 8, 6, and 9 (for example), as long as those classes fill needs and consist of guys who are fits, both systematically and culturally, it can compete for a NC because Heupel gives Tennessee a schematic advantage. I'm beginning to think Banks may do that too (thought the jury is still obviously out there). Add to those classes some talent from the portal, and championships are entirely realistic.
So calm down. No one is setting up strawmen. We can have a discussion without it being acrimonious. There are valid opinions either way.