Can't help on stock levels but as far as LiPo for RC and LiPo for Airsoft...no. No difference. RC ones may be of slightly higher quality, if they have Tamiya connectors they'll be opposite polarity. Otherwise, a 2 cell, 7.4v LiPo is a 2 cell 7.4v LiPo whether it says RC or Airsoft on the side.