Toledo has one player over six feet - but their four guard lineup does not turn the ball over. Top 20 in both turnovers per game average and assist-to-turnover ratio, and #23 in FG%. They take care of their possessions and make the most of them. 29 wins isn't an accident. If they maximize their efficiency against Tennessee's size, and harass enough of Tennessee's shots, they could make some noise.
On the other hand, they have only one player over six feet. If Tennessee can avoid turning the ball over excessively, and if UT's guards can handle their business against Toledo's guard rotation, that size should be a huge asset, pun intended. I'd take ours'uns over theirs'uns. Not that this is a surprise, I'm sure.