They're different. Both are live recordings from March 1976, Warner/Erato predating Melodiya by some three weeks or so. I prefer the earlier one, there are few pretty obvious orchestral lapses here and there but overall performance strikes me as more involving and tense than technically better played but duller later one (and the sound seemed touch dead on Melodiya).
Could be wrong, heard the Melodiya recording only once and that was some time ago.