Who is more famous Sonic the Hedgehog or Katie Holmes?

Answer 1

Sonic the Hedgehog is by far more famous, my very good friend who has absolutely no video gaming background knew who sonic the Hedgehog is, and statistics show that sonic the hedgehog is 13 percent more known then Katie Holmes

Answer 2

Your question cannot be answered with the information currently available.

"More Famous" is too idiomatic for anyone to provide an adequate answer without poll data from various areas & age groups, perhaps even from different socio economic groups.

Without any data of this sort there is no way to really determine which person is more widely known to the general populace therefore any answer would really be speculation, opinion and/or conjecture from the individual who answered.