The nasty Tories are talking about adjusting existing rail fare regulation whereas Labour were talking about a whole new tier of regulation for the energy industry. The main political point scoring against Labour's energy freeze policy was that it didn't take into account fluctuating prices - i.e. prices go down as well as up - but, of course, labour backtracked on that one and decided retrospectively that it was a cap not a freeze.
P.s. the "big society" is in reference to the volunteering initiative, not the train fare policy.