5th Gen After the Storyline

[Masterge77]

I always found it to be an unfair advantage, I mean really, it goes from Level 50-53, and then suddenly jumps 10 levels.

Then again, a LOT of the Pokemon in Gen 5 evolve at unreasonably high levels, ones that are absurd such as Mienfoo into Mienshao at level 50, and the worst offender of all is Zwelious into Hydregion, at LEVEL 63! Seriously Game Freak!?

 

[Charicific]

A glided through these trainers, I didn't lose, but it required some time.
I like it though, since it gives a HUGE Boost of EXP to your pokemons, leveling up in B/W became so easy after that, Especially since stronger Pokemon give loads of EXP than low leveled ones.

But I had to train to take out Cynthia, she owned me the first time.

 

[Elite Overlord LeSabre™]

Completely unfair and one of the worst parts about B/W IMO. Also one of the reasons I never played through the games again. The level jump was extremely frustrating, completely absurd (if these guys are so tough, why aren't THEY Elite Four members), and required even more pointless level grinding than usual. I was at Lv60 after beating the Elite Four and I had to level grind to 73 or 74 before I felt comfortable taking them on.

In short, that was my least-liked part of B/W and it still causes me to rage...

 

[Pyrax]

Meh, it was hard and frustrating at first, but I eventually found the level jump easy after half a day's worth of grinding. In fact, the closest I ever came to losing was against that ranger's Altaria, and even then my lv.56 Scrafty defeated it with Dragon Claw.

 

[quilzel]

It was quite a surprise to see the jump, but I liked it. It was another challenge, and a hard one at that. There where a couple of times that I barley beat them, but I did manage to take them with level 50 Pokemon.

 

[Perriechu]

It surprised me, since I didn't know what was coming. I was expecting to face Level 55-58 at first, but coming at the levels they did. x__x It was a good move on their part, IMO. Since people sometimes expect the post-game to be a little too hard. But the Pokemon they used weren't very good stat-wise, so it was easy to take them out.