I have to go with Hutson.
He evolved the passing game into it is today and did everything he could with it. Pass interference was different then and your QB's weren't as refined as they are in Rice's era. He played Offense, Defense and Special Teams and made all his records in less seasons, less games per season, and if it wasn't for him, it would probably take eons to develop. His stats alone would outrank teams, not just players, and that is admirable. And done it on one team.
Rice is a modern great, and deserves the praises that he gets. He had several great years, and with hold many records, some broken already, most not. Hutson's held for a long time. And the best Super Bowl Era receiver goes to Rice, best football receiver goes to Hutson.