What about his performance last season when he got worse in almost every statistical category?
I'm not sure if you're making a bad faith argument or were too lazy to look at actual statistics. You should know by now that I'm not too lazy to look it up. Whatever the reason, you're just not correct.
PTS: 13.9 --> 13.9 = SAME
REB: 2.1 --2.6 = UP
AST: 2.0 --> 2.6 = UP
TO: 1.5 --> 1.4 = SAME
STL: 0.9 --> 0.8 = SAME
BLK: 0.1 --> 0.2 = SAME
2FG: 45% --> 42% (6.8 --> 5.9 attempts) = DOWN on lower volume
3FG: 40% --> 36% (6.9 --> 8.3 attempts) = DOWN on higher volume
FT: 72% --> 81% (2.0 --> 1.9 attempts) = UP on same volume
"Every statistical category" boils down to shooting, which is likely explained by being more of a focal point of the defense and team leader as a sophomore.
I wouldn't say that Aidan was a statistically better player as a sophomore... he was about equal, I guess. I haven't watched enough to really be sure. Which I'm sure factored into his decision to come to the best developmental program in the country. I can't imagine a world in which our staff prioritized him as our guard transfer if he didn't show improvement and have the mental make-up to be a part of our team. At the end of the day, Aidan is really, really good at the single most important skill in the game (shooting), and clearly showed enough to impress our staff that he can be a leader on our team.
We can look at some advanced stats too, since I have the time:
TS%: 53% --> 51%
PER: 16.3 --> 14.6
ORTG: 110 --> 113
DTRG: 99 --> 99
Win Shares: 4.0 --> 4.4
BPM: 4.1 --> 3.1
TRB%: 4.4 --> 4.8
AST%: 14.3 --> 14.4
BLK%: 0.2 --> 0.4
STL%: 1.8 --> 1.5
USG%: 25.7 --> 23.6
So, I guess... again... I see a player who stepped into a bigger role and basically kept his overall production without a substantial improvement. Really all of these except maybe ORTG, PER, and USG% are essentially a wash.
I'd love to hear
@AidanFan20 's take on Mahaney's freshman to sophomore year improvement, or lack therof. He's probably watched more film than the rest of us combined.