Like SuperSaiyan2 said, it's probable that Goku base was still a bit below #16, considering the base kids were at most at #18's level. But it's also safe to say Papoye was a good deal above base Goku, since the Lord of the Southern Words, though still a bit afraid, was confident in sending Papoye to compete in the Tenkai'chi Budôkai upon seeing base Goku's performance and was just really afraid and discarding such possibility when Goku turned into a SSJ. SSJ Goku >> Papoye > base Goku, the same being valid to #16.