well i have added about ten pounds to each of my big three, which to me is disappointing when i hear people adding 50-100 pounds on each.
and as far as the weight gain its far from lean muscle. I would say 2-3 pounds of muscle. (you gotta remember and visualize just how much that actually is) and the rest water/glycogen. When i started this cycle i was at the end of a small cutting phase, so i was depleted of glycogen and not near as bloated.