Originally Posted by Griever
The SAO LN is 11 volumes. That only gives roughly 2.5 episodes per volume. Since there's no such thing as 2.5 episodes, we have to round down to 2 episodes. 2 episodes per volume is not a lot to work with. Of course it's going to seem rushed, they took out the insignificant stuff.
Only the first 2 volumes were animated so I hardly get your point here. No the reason why it went to 25 episodes instead of 23 was because they added the insignificant stuff.