He is the only one in his NT in terms of offense. It suits him. And its against weak NT. When the team plays for him he´s a great player.
His contributions to his NT is great, no matter if the teams they face arent that great. But remember, Wales is hardly a world beater either. But yeah, Bale thrives as a main man, but i dont think he can ever be the main main on Madrid, even if Ronaldo leaves. He can be one of several perhaps, but there are players like James, Benzema, Modric etc. in this team, he needs to adapt to a different role in Madrid, its been very hit and miss for him so far.