But do you think that UK being "Gonzaga" from 2010-2015 playing in a super weak SEC hurt them come tournament time?
First of all, the ACC this year may be the worst Power 5 conference since the 90's or 80's. HALF the league (9 teams) not even inside the top 100!
I can't look at the NET rankings that far back (it didn't exist yet), so I looked at the Sagarin rankings (which are more trustworthy than are Pomeroy's). I'm not doing 2013 since UK was not in tournament that year.
ACC 2025: 1 team in top 20; 33% of league (6 teams) are ranked 1-61, 33% are from 72-106, and 33% are 127-230; 9 of 18 outside top 100
SEC 2010: 2 teams in top 20; 33% of league (4 teams) were 3-46, 33% were 51-81, and 33% were 91-181; 3 of 12 outside top 100
SEC 2011: 2 teams in top 20; 33% of league (4 teams) were 5-48, 33% were 55-104, and 33% were 116-229; 5 of 12 outside top 100
SEC 2012: 3 (25%) teams in top 20; 33% of league (4 teams) were 1-30, 33% were 74-98, and 33% were 109-160; 4 of 12 outside top 100
SEC 2014: 2 teams in top 10, 3 in top 20; 36% of league (5 teams) were 3-57, 29% (4 teams) were 67-87, and 36% were 105-187; 5 of 14 outside top 100
SEC 2015: 1 team in top 20; 36% of league (5 teams) were 1-47, 29% were 50-59, and 36% were 70-179; 3 of 14 outside top 100
Summary:
SEC all 5 years was marginally better than ACC 2025.
In 2010, 9 of 12 were in the top 91, whereas only 9 of 18 ACC are this year.
In 2011, it is closer, SEC had 2 really bad teams as bad as the worst 2 in ACC this year, but still had 7 of 12 in top 80 (whereas ACC only has 7 of 18 in top 80).
In 2012, SEC had 4 top 30 teams, ACC has 3. UK played 5 games vs those other 3 top 30 teams. Duke will play only 2 games vs the other 2 top 30 teams.
In 2014, SEC expanded basically adding 2 teams in the 105-107 range compared to the 2010 season. Still 9 of 14 in top 87, ACC has only 9 of 18. So closer to ACC this year, but not quite that bad.
In 2015, SEC had 11 of 14 in top 84, ACC only has 9 of 18.
Thus Duke is a bigger Gonzaga in that respect (conference competition) than was UK any of those seasons.
2010, UK had a dominant starting 5 of John Wall, Eric Bledsoe, Darius Miller, Patrick Patterson & Demarcus Cousins, with a solid bench. Yet UNDERACHIEVED in the NCAA-T (#1 seed), losing an E8 game to WV due to bad 3pt shooting and lack of adjustment to zone defense. So yeah, possibly "being Gonzaga" did hurt that team.
2011, UK had a very good top 6, but did not go any deeper than that. Knocked off the 1 seed making it to the F4. So no "Gonzaga effect" there.
2012, UK had a dominant top 6 led by a dominant player (Davis), and the consensus was it would be either UK or UNC. This is probably the team Duke most wants to be like, and achieve at the same level.
2014, UK had a lot of talent, young talent, on this team, but they underachieved due to that youth most of the year. Then they overachieved in the NCAA-T, thus no "Gonzaga effect".
2015, UK had a historic level of talent, and until the Poythress injury in December looked like was going to have a historic season. Almost still did. Even though they made it to the Final 4, they struggled in E8 game before losing in F4, in what would be considered an underachievement. So yes, possibly "being Gonzaga" did hurt this team too.
Conclusion:
The ACC is worse this year than the SEC was in any of those years you listed (from 2010-2015, including 5 E8 or better seasons). In 2 of those 5 seasons UK underachieved possibly "being Gonzaga", in 2 of them they over-achieved, and in the 5th they did what they were supposed to do.