I don't disagree that the D was a weakness but it played well enough to win against Pitt and Duke, 2 teams with similar talent that our offense no longer gave us an advantage against. The D can really only be blamed for USF loss in 2018. The loss to Clemson and mutts were team losses.
Not sure what those offensive rankings mean. Points? PPP? Rushing? Also not sure how much of an influence the VPI and Louisville games had on them?
This is a classic example of redefining the argument. Your original assertion was that "It's been a few years since the previous regime offense was much of an equalizer." Now, when I point out otherwise, you point merely to two specific games. Everyone has a bad game or two, and only two teams managed to beat uga and Clemson last year, so I'm pretty sure that, considering how atrocious our D has been, it's the O that's been winning games for us.
Also, in the Pitt game, down 21-0 at half, CPJ adjusts and brings us right back into it. The interception cost us that game, but our O was charging back in the second half.