Heavy games w/o lag its hardly unlikely, as far as Xperia E getting 4.2 it doesn't seem likely either but there's hope that it might get 4.3 as Sony hasn't said that its not, but they haven't said it will.
u can play most games without lag after the A.2.23 update.......not hardcore gaming but it can handle it....nicely...{big games u will have trouble completing at high difficulties }
