No, it means Ash recognizes he needs to train his pokemon a bit more prior to the league.
You're pretty much saying the same thing in a nicer way...
The thing is that Ash is simply NOT ready for the League yet, and he pretty much said it during this ep... people wanted an in-show proof to Ash not being as good as he should be, and we more-or-less got it in this ep
If Ash will train seriously with Dawn in these 3 months before the League, I can see his team and Ash himself getting closer to how things were during DP (though probably still not as good as DP)
I'm starting to feel like Ash's team is going to improve a lot and do pretty good in the League, but not as good as the Sinnoh team... I think Top 8 would be the best way to do it
Then Ash can decide to train even harder since he'll be disappointed of getting a lower rank... actually, I wonder if Dawn may still somehow be around when that happens... she did stick to watch his Sinnoh League even after she didn't have anything to do anymore... she might do the same now... and in case Ash gets "depressed" of getting a lower League rank, she might be able to help him, after she's been thorugh similar things...