No, Syntec is the same, not better. The popular story is that Mobil took Castrol to court for calling their "severely
hydro-cracked" dino oil synthetic, compared to Mobil's PAO-based "real" synthetic, and the FTC ruled that Castrol could call theirs synthetic (which they were charging substantially as much as Mobil 1). So instead of taking the high road and continuing to make a superior product, Mobil decided they would never be able to convince the public that theirs was really better, so they just changed theirs over to the cheaper chemistry that Castrol uses to make boatloads more money. Mobil denies that, the truth will be forever obscured in the molecules and the bonuses of the CEO's....