I hopped straight on over to Route 11 after completing the story and, to be honest, I wasn't expecting to be thrown into battle with Pokémon that were much higher level than my own. It was a surprise, but a welcomed one nevertheless. It gets old quite quickly when you're able to sweep Pokémon trainers easily. I found it to be much more challenging fighting trainers with such high-levelled Pokémon.
I realised I'd need to train some more if I was going to progress onwards so I went straight back to the Elite 4. Again, I was surprised to see their levels and teams excel beyond 70+. I seriously didn't think anything would change from the first time around, in terms of their Pokémon team and levels. I'm glad I saved my game right before entering...
I didn't bottle it though. I forced myself through those guys with everything I could muster and only -just- managed to scrape by Alder. My highest levelled Pokémon was only 58 and it came right down to a last Pokémon vs. last Pokémon situation. :X