This may well be true, but Imperial (ticker: IMO) trades at a considerable valuation premium to the parent company, XOM; moreover, I tend to be gun shy about stocks that are majority owned subsidiaries insofar as there have been numerous cases of minority shareholders being shafted.
p.s. Cheng meant to say comprises rather than composes in the quotation above. Cheng’s English may need some help, but he knows energy stocks pretty well, as far as I can tell.