Question Two.
BIgmick asks
I have another question. Number two if you like. Given that we have been resting our players more than the other teams, why do we have to wait until the end of the season for it to have an effect? Can we expect to see some geater verve, awareness and spark in the games against Arsenal and Tottenham from the likes of Torres? If the answer is no, and the reason it's no is because the Arsenal and Tottenham players are not sufficiently fatigued yet to allow the resting to really have an effect, why then are our players sufficiently tired to need a rest in the first place
Yes, rotation helps in order to end the season strongly. That's an opinion of our manager, and for that matter, the amount of finals reached this seasons back up his words. People can talk of luck when you eliminate chelsea one year. But when you're reaching other finals (FA cup), and you're eliminating Chelsea again yesteryear reaching the final of the most important competition in Europe, it means that you are indeed ending up stronger than other teams.
But, what about the next games, what about Tottenham and Arsenal? good question.
Rotation also have good sides on the short term:
We all agree Mascherano, Alonso, and Gerrard are excellent midfielders. We all agree we want the strongest squad in the pitch. Therefore, if Alonso is injured, most of us and that includes the antirotationists, will want Gerrard and Mascherano in the middle. So, if this couple of midfielders play against Wigan, and then have to play against Marseille, then you can bet that in the next LEAGUE game this couple won't be as fresh as if they didn't play midweek. That's where rotation is useful.
Rafa wants to have the right players, for the right game, at the right form. The point of resting Torres against Birmingham is no other than having him at 100% when he's needed in the next match for instance, and if any, Birmingham was the right game to give him that rest. So Rotation is not about the last 15 games, only.
So, in a nut shell answering question two, yes, you can expect 100% of Torres verve, spark and all that against this important teams

(1) And if he doesn't play well you can blame him aswell, not rotation
