u/En_Th_

Is it because of that c6 pawn? I'm trying to understand what's the plan in here and how does that position have such an advantage for white?

This position arise from these moves:

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Nf6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 d6 9. Nxd6+ Bxd6 10. exd6 Qxd6 11. c4 Qe5+ 12. Qe2 Qxe2+ 13. Bxe2 Nb4