Yeah, not sure about the Gasol thing. Gasol had a touch on his jump shots well before he developed his three point shot, really from the moment he entered the league -- in his very first year he was shooting 40%+ on mid-range jumpers and took a reasonable number of attempts from there. Zizic has barely taken a single shot from outside of 10 feet this year. Gasol also has a couple of inches in height on Zizic and seems considerably more fluid in the way he moves (although part of that can be b-ball IQ in terms of defensive positioning).
Of course Gasol was 24 when he entered the league so who knows, I didn't see him before then. Agree that Zizic's floor if he's used right seems to be like a 12/12 guy on high efficiency with solid D who doesn't make a lot of mistakes. That's a good player to have!