I mean, anything is arguable if you try hard enough...
I think it's fair to say that he had a comparable trajectory to Brad up until 2023, but has consistently and dramatically underperformed since then. I get what you're saying about unfortunate/unexpected events & injuries, but every team/roster faces some kind of adversity, and it speaks to the coach on whether they can navigate it (Underwood) or if the season implodes because of it (Musselman).
Perhaps one of the most objective ways to look at coaching performance is beginning team rank on KenPom (expectations backed up by empirical data) vs ending rank (actual observed results). I've put together a side-by-side to show Underwood's performance vs. Musselman's, which is below. Underwood has consistently outperformed expectations, ending the season with a worse KP rank only twice in the past 13 seasons. Comparing this to Musselman, he has only outperformed expectations 4 times in 11 seasons, and hasn't done it since 2021.
He has only outperformed expectations with a high major 1 time.
In fairness, the one thing that I will give him is that up until 2023, he had a track record of outperforming expectations in the tournament (although he took Nevada to the S16, not the E8). With that said, I'd take the coach on the left 100 times out of 100 vs the coach on the right.
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