As an American you would be a fool not to at least look at the opportunity. All of the majors contracts are leaps and bounds better than EK and then when you examine the lifestyle with a closer look you will see that most pilots only work 12-13 days a month and from about 6am to 11pm. Hell even on reserve you are guaranteed 13 days off. I am sure the Airbus captains will kill to have that many days off with the hours flying listed above.
However saying all that most of the US pilots at EK would have a hard time getting hired by a major. A lot of these pilots come from Mesa and other crap regionals and couldn't get hired before. There is a reason why they are at those crap airlines.