Could Obito be the ultimate Bijuu summoner since so6p or is it Madara, but keep in mind, Obito summoned the Gedo Mazu, Kyuubi, and Juubi. And Madara summoned a perfect susanoo( it's a gegi genkai but it's a kind of summoning) and Kyuubi, so is Obito the best ketchiouseh since the so6p ?