I was looking at the five letters that Rav Nahman wrote to his friends and family. In one he writes to one of his sons in law and tells him to write back telling him how many pages of Gemara he learns every day "for in this is my desire". You certainly see that Rav Nahman had a clear idea of what learning Torah and keeping Torah is all about. So why do you not see the sort of intense study of Torah in Breslov that you see in the most average Litvak yeshiva? The reason is that most people in Breslov are fallen souls like myself, --people that have a hard time studying anything--much less Gemara with Tosphot and Maharsha.
People like us need more encouraging things--and for that reason in Breslov people spend more time on the books of Rav Nahman.
[My own approach to Gemara is that a lot depends on the time one has available. When I was at Shar Yashuv and the Mir I had the whole day and night. Later when I was at the Polytechnic Institute of NYU doing Physics, I had less time for Gemara. So what I suggest is to divide one's time in equal proportions. Or at minimum to do one half page of Gemara with Tosphot and Maharsha--which is about 40 minutes. Or in place of that to do a section of the Avi Ezri of Rav Shach or the Hidushei HaRambam of Rav Haim of Brisk. (The books of Rav Chaim of Brisk are the beginning of a new way of learning. Before him the emphasis was more on Tosphot. However there is in both ways a great deal of merit.]
