Carr's time at Port is as overrated as his time at Freo is underrated.
He cracked a seasonal average of 20+ touches three times in his career and all came after leaving Port (2005, 2006, 2007). Only cracked 30+ disposals four times in his career. All of them at Freo.
You could argue he improved his numbers with the greater responsibility of being in a thinner, lesser team, but as an individual he enjoyed his best years in purple.
I'd give my left nut for a circa 2003/4 Josh Carr in our side right now.