Akihiko Kazuki
The dragonball wiki is also fan edited though so its not the most reliable source of information in terms of whom is stronger than whom and it only says that because Gogeta can reach SSJ4 but that would also mean vice Versa for Vegeto if SSJ4 Goku and SSJ4 Vegeta used the patara earings they would appear in SSJ4 Vegeto so it is pretty much a stale mate either way you slice it
The dragonball wiki is both fan made but most of the information was provided by Toriyama himself and sometimes logic. It doesn't say its because Gogeta can reach SSj4 cause if you check the the wiki and search for Gogeta and check the power section, its officialy stated to have the power level around 2,500,000,000 which is the highest. But I also agree that both fighters have to be stalemate until Gogeta's time wears out since both fighters come from the same 2 fighters to make them.