>>41677890>Rose doesn't know you and has no reason to trust you with the power of Eternarus.He knows that you are the other finalist in the tournament who he has met you throughout your journey. So however strong you are it is stronger than him, the gym leaders and the closest in strength to Leon there is. He has no reason to not let another person fire off attacks at the thing, hell get everyone and just constantly bombard it from all sides. At least get 4 as that is allowed by raid battle rules.
>He doesn't think that Leon needs help and that you'll get in the way.This would just make him more retarded. It is some Man of Steel style shit, no my super powerful trainer let Leon's pokemon struggle against satan on their own for no reason. The closest thing to you getting in the way is you not getting there earlier, so you arrived when Leon let his guard down as it had been ""captured."" If the cutscenes weren't so shit they could have actually portrayed a gym leader's pokemon not keeping up and getting in the way.
>Rose turns out to be right because Leon did beat EteranusAnd failed to catch it, as it wasn't weaker enough and easily kept on fighting. So he didn't beat it