But think about it. In the first League, Kanto, Ash used only the Pokemon he caught in that league (well duh it's his first league...) and the league took up 6 episodes from "Round One, Begin" to "Friends To The End."
*Then we had this Orange League filler saga.*
In the second league, Johto, Ash used all his Pokemon from this and prior regions. The league took up 7 episodes with "A Claim to Flame" to "Johto Photo Finish."
Then we went straight to Hoenn and in that league, Ash only used the Pokemon he caught in that region (along with Pikachu of course). This league took 6 episodes from "Saved By The Beldum" to "At The End Of The Fray."
*Kanto Battle Frontier Saga insert here*
Then we go the Sinnoh League where Ash used his Pokemon from this and prior regions. This league took 7 episodes from "League Unleashed" to "The Semi-Final Frontier."
NOW let's talk about This league and the pattern from the prior. If you look at it, every other league starting with the first, Ash has usually used the Pokemon caught in THAT region. So this Region's league he will most likely be using only Pikachu and the Unova region Pokemon he catches. Now, the difference this region from the others is that Ash is catching Pokemon from Unova left and right. It will be hard to have all those Pokemon featured in just 6-7 episdoes. So my guess is, in order to make more league episodes, Ash will have to go even farther in the league position. Therefore, I feel Ash may make top 2 but lose so that his journey (and the series) continues.