I prefer to look at it like this:
2018: we lost to 2 teams we should not have (UK/MIZZOU) and 1 we should have (UGA). We beat 1 team we should have lost to (LSU). We won 1 game that was a coin flip (MSU). If you want to dive deeper, we won 2 sloppy games that easily could have been losses (VU, USC), beat a coaching handicapped team (FSU), and won a bowl game over an undermanned team (UM). Still, outperformed almost all expectations.
2019: we lost to 2 teams we should have (LSU/UGA). We won 1 game that was a coin flip (Aub). Diving deeper, we have won 2 games we could have lost (UM/UK) and won 2 sloppy games (USC/MIZZOU). Everything else, from both seasons, were expected blowouts. This season, judging by preseason threads, is on track or exceeding expectations via record but haven’t taken a leap in the “eye” test, at least not consistently.
Guess what I’m getting at is that I don’t think we’ve improved dramatically but also don’t think schedule strength has really changed, much. We played about 2 teams that should beat us, 1-2 that are coin flips, and the rest should be wins - no matter how good they are relative to each other.