Not a bad choice. Per KenPom they are the only team on the same tier as UConn. One of the only games of theirs I watched this year was the B12 title game where they were destroyed by ISU so my brain now irrationally associates them with that.
Also looking at the team that everyone thinks has the best shot to knock off UConn in their bracket which is Auburn. They are the only team in the top 10 of both adjusted offensive and defensive efficiency (10th off, 4th def). UConn (1st off, 12th def) and Arizona (8th off, 11th def) are both close as well. Actually Arizona is not a bad pick as well, their bracket looks fairly weak starting with the worst number 1 seed in the field (UNC)