Mass Effect 2 executive producer Casey Hudson has revealed some interesting statistics from the game:
BioWare found that only 15% of conversations were skipped in Mass Effect 2, with the rate higher in non-critical moments like in the hub worlds and much lower later in the game at the climax. "If we found that 80% or 90% of the lines were being skipped, we would have to reevaluate the work that we were putting into the digital acting."
Other times, the data surprises. That happened with both how there were differences between the PC and Xbox 360 populations, as well as in regards to importing saves from Mass Effect 1. "We were surprised by how many people imported a game from Mass Effect 1