Quick comparison of two teams with identical records in 2019 (Jacksonville: 17 - 4 and North Carolina: 17 - 4). According to your logic these teams should be considered equal and have the same "Ranking". Maybe if the competed against each other the game would have resulted in a tie.
Jacksonville Record: 17 - 4
Ranking: Not ranked at the end of the season.
Jacksonville played 3 Top 20 Teams (#11, #13, #17) Lost to all three Top 20 Teams.
Jacksonville played 0 Top 10 Teams.
Jacksonville had 0 Top 20 wins.
Jacksonville had 1 loss to an unranked team.
North Carolina Record: 17 - 4
Ranking: # 3
UNC played 12 Top 20 Teams (#1, #2 three times, #4, #5, #7 twice, #9, #13 twice, #15) 8 - 4 vs Top 20.
9 opponents were Top 10.
6 opponents were Top 5
UNC had 8 wins Vs Top 20 Teams.
5 Wins vs Top 10 Teams.
3 Wins vs Top 5 Teams.
1 Win vs the # 2 Team.
Lost to # 1 National Champion by 1 goal in OT.
BTW... UNC played #21 twice, #24, and #25 twice....
17 of 21 games were played Vs Top 25 Teams.
Sorry, In women's Division I Lacrosse a teams record means very little when comparing or evaluating teams.