Last season, UVA and UNC were tied at 16-2. UVA claimed the 1 seed by virtue of a tiebreaker.
Lets adjust UVA:
they lost to duke twice, so get a loss back 16-1
They beat ND twice, so lose a win 15-1
They beat VT twice, so lose a win 14-1
All their home wins were large enough to not warrant second guessing.
Now UNC:
They beat duke twice, so lose a win 15-2
They beat miami twice, so lose a win 14-2
They split with louisville, so lose half of each 13.5-1.5
All their home wins were significant enough.
So in this case, the unbalanced schedules, likely didn't impact the winner.
In 2018, UVA ran away with the title. Also UMBC.
In 2017, UNC won by 2 games.
In 2016, UNC won by 1 game game over each uva and miami with a record of 14-4.
UNC
split with duke 13.5-3.5
2x beat BC 12.5-3.5
2x beat cuse 11.5-3.5
3 close away losses, and a close home win over syracuse, giving them an extra win on average
12.5-2.5
Virginia
split miami 12.5-4.5
split VT 12-4
2x beat UL 11-4
3 close away losses, 2 close home wins, netting them an extra .5
11.5-3.5
Miami
split with UVA 12.5-4.5
2x beat ND 11.5-4.5
2x beat FSU 10.5-4.5
2 close home wins, losing them an extra win
9.5-5.5
So while the scheduling helped miami significantly, it didn't impact the regular season winner itself.
In 2015, uva beat duke by 1 game
Virginia
2x beat ncsu 15-2
2x beat VT 14-2
split with UL 13.5-1.5
They had a close home win
13-2
Duke
2x beat UNC 14-3
2x beat wake 13-3
split with ND 12.5-2.5
We had a close away loss
13-2
So in 2015, it's likely the regular season was impacted by the unbalanced schedule
In 2014, UVA won by 2 games
In 2013, Miami beat duke by a game. Note that in this year, there were only 12 ACC teams, so 7 home and aways. In order to simplify this, we'll only look at 4 non-home-and-away games.
Miami
beat maryland in a close home game 15-4
beat n.c. state in an away game 16-4
beat uva in a close home game 16-5
lost to wake in an away game 16-6
Duke
beat clemson at home 15-4
beat GT at home 16-4
beat FSU away 17-4
lost in a close game to UVA on the road 18-4
It's extremely likely the unbalanced schedule cost duke the regular season in 2013.
In 2012, UNC beat Duke by a game This was a 16 game schedule. We'll still just look at the 6 non-double games
UNC
beat BC at home 15-2
lost to FSU away 15-3
beat VT away 16-3
beat gt at home 17-3
beat wake away 18-3
beat clemson at home 19-3
Duke
beat GT away 14-3
beat UVA close at home 14-4
beat clemson away 15-4
lost to miami at home 15-5
beat NCSU close at home 15-6
beat BC away 16-6
It seems the unbalanced schedule made this closer than it might have otherwise been
In 2011, UNC beat duke by 1 game
UNC
beat uva away 15-2
beat vt close at home 15-3
lost big away to GT 15-4
beat miami away 16-4
beat wake at home 17-4
beat maryland at home 18-4
Duke
lost closet to FSU away 14-3
lost away to wake big 14-4
beat bc at home 15-4
beat GT at home 16-4
lost close to VT away 17-4
beat clemson at home 18-4
It's likely the 2011 regular season was affected by the unbalanced schedule.
in 2010 duke and maryland "tied" with duke taking the 1 seed
Duke
beat wake at home 14-3
lost to state away 14-4
beat FSU at home 15-4
beat miami away 16-4
beat vt at home 17-4
beat uva away 18-4
Maryland
lost to wake close away 14-3
beat BC away 15-3
beat miamia at home 16-3
beat UNC at thome 17-3
beat GT at home close 17-4
beat VT close away 18-4
So it's unlikely the 2010 result was affected