The Twins have their own analytics team, but we can play along at home.
Florio has a below-average OPS-against this season, with a BABIP that suggests either his "luck" will improve, or batters are tattooing the ball for high-percentage opportunities.
Lopez has an even worse OPS-against, and a BABIP suggesting he's actually been a bit fortunate, at that.
Of course one partial year's numbers on any reliever qualify as Small Sample Size, so who knows what our FO's analysis ultimately was.
It's a "challenge trade," involving two players with similar roles. A low-stakes challenge, but still, one that can be directly compared from this point forward.
I don't rule out that Lopez could have requested a trade.