Mirror, mirror on the wall, who is the fairest of them all? In the oil sector the answer for investors was always ExxonMobil.
But after decades of lording it over its rivals, the Texas-based giant is in danger of being eclipsed by Shell.
Ben van Beurden, Shell's soft-spoken but tough chief executive, has helped move his company’s stock value close to that of ExxonMobil.
