So are these alternative missiles as good as Russia’s best Anti ship missiles, what is the best American Anti Ship Missile and the best Russian Anti Ship Missile and how do they compare?

They don’t need to compare. The USN anti ship missiles are not that great and haven’t been updated because there is no fleet out there that can effectively warrant such a weapon. The biggest naval threat out there that is not American or closely allied to the US is the Russia fleet of submarines, and they don’t sail very much. (they don’t have to).