Oh yeah Quero's numbers are quite bad.
Quero - 93 SB, 16 CS for a 16% CS at a .245 SB per inning rate
Rodriguez - 31 SB, 5 CS for a 14% CS at a .111 SB per inning rate
Miller - 16 SB, 5 CS for a 24% CS at a .123 SB per inning rate
Nava - 9 SB, 6 CS for a 40% CS at a .090 SB per inning rate
International League - 2447 SB, 682 CS for a 21.8% CS at a .139 SB per inning rate
Obviously there's additional context like what teams you're facing and who is pitching but teams ran wild with Quero at C this year both in terms of success rate and overall rate of stealing even compared to his own teammates.