I don't understand your point. 10 across in the 777 and 10 across in the A380 are different things. msbbarratt has made the reasonable point that the 777 '10 across' configuration is generally perceived as being cramped and that by contrast the extra width on the A380 (even at 10 across) is a big selling point for the latter over the former. I've countered that since Emirates have more of the the 10-across 777 in their fleet than A380's the 777 must work for them; passengers clearly aren't put off to that degree.