Garza wasn't a black hole with the basketball. He took it to the basket or shot when he knew he had a high % opportunity. He passed before he forced things.
I think Fizer's junior year he was actually more dominant and unstoppable around the basket than Garza, Fizer just did not have the shooting range Garza has away from the rim. Yet Fizer would on occasion force things a little too much. ISU's elite 8 team made up for this by having 3 absolutely fantastic guards that could also create, shoot and move the basketball.