You've failed to factor in growth rate. Your calculations for how long it will take to earn back the share value are assuming no growth in EPS over that timeframe.
I wouldn't be surprised if Apple's EPS growth outpaces Facebook, but these numbers are completely meaningless until you at least make a stab at adding in projected growth.
I wouldn't be surprised if Apple's EPS growth outpaces Facebook, but these numbers are completely meaningless until you at least make a stab at adding in projected growth.