As an example, under the "new deal" you can travel SYD-LAX-SYD in coach for 80,000 QF miles - right now it is 100,000 points needed. So If I spend about $US33,000 on my Amex for business purchases, I get a free trip to the USA.
I'd need to spend $US60,000 on a UA Visa card (I assume $US1 spent = 1 MP point?) to redeem one free coach ticket for same route on UA - nearly twice as much as Qantas requires.
------------------
~ Glen ~