Perhaps because it was too busy focusing on spoilers from the opening (looking at the "Opening's thread", but this episode felt lacking.
I don't know why but it was over before it began. It barely focused on Meloetta, as in Meloetta didn't do much other than play sick.
Nice battle between Garchomp vs Axew, but the only reason why Axew took two super effective hits is because it's Iris the dragon master in training. And Giga Impact? Great, you want to make it suck even worse against ghost types. Seriously Dragon rage, and maybe Outrage (if it ever is decided to be used again), are the only things that can affect a ghost Pokemon. Iris is just lucky there's no type immune to dragon types, in combination with a ghost type, Axew would do crap to that type combination.
I don't hate the choice to give it Giga Impact, seems like a decent enough move, but a powerful NORMAL type move, that's the last thing Axew needed.
LOL @ the Dawn cameo, they aren't even trying to hide her returning to the show. Yes, yes ignoring that it was long confirmed. I guess they decided six months ago that Dawn would be heavily advertised for Best Wishes 2, they decided to just shove her last minute in the last few seconds of the first episode. But they did this with May so it's not at all surprising.