I was responding to legendary argument but to your Go's attack argument, that basically happened with other people like some rivals and even companions like May or Dawn who struggled to get first Pokemon but by episode 50 Dawn was fighting in tournament and getting to finale. May IIRC got her first ribbon in episode 50.
I se,e you probably worded it like to seem that every Pokemon he catches in future is automatically stronger than older Pokemon. Of course this Ash is better than AG Ash but Pokemon's power is individual. Yes, older Pokemon are obviously stronger but if they trained. Example if Torkoal from DP never trained for all those years even 30 year old hypothetical Ash if he uses Torkoal, Torkoal wouldn't be stronger than he was in DP since he was lazy, goofing around etc. Yes, 30 yo Ash would probably use that laziness as advantage as strategy unlike DP Ash but power wise Torkoal would be same.
How am I disrespecting? It's already set in stone that Lucario is an ace.You do know that every series has 1 ace except SM and BW which had 2 aces? I don't understand that this is disrespect. Flint's Infernape is an ace, though. It doesn't need boost yes, I mean Ash's Pokemon proved it with Charizard, Pikachu, Snorlax, Sceptile but problem is those Pokemon had time to get there where they are. Charizard OS- BW. Pikachu OS-SM, Sceptile AG-DP, Snorlax OS - BF/DP. Lucario would obviously be in Top 6( like replacing Incineroar) without a boost but for him to be on A-G level or Pikachu by end of PJ he needs Aura boost( like that Aura boost) like that A-G boost.
That's my point, Gastrodon is not ace( like Aegislash) and he/she took out 2 non aces of probably weakest Sinnoh E4. Point is that E4 non aces( like Champion's) are not weak. That's why Aegislash is wild card: it could be nerfed it could have soft spot like Shadow said that it would go down no matter how powerful it is( in Blade form), it could hold back, it could be his weaker mon outside his party. His team to match Leon's team is why Ash has to call reserves: Charizard, Greninja to return, Sceptile, Infernape, maybe Snorlax. But also don't forget that Leon vs Ash will probably be 1 on 1: Charizard vs Pikachu.