Even though Emirates crams 10-across their 777's, they have 34" pitch on most of their 777's...I would take 10-across with 34' pitch ANY day over 9-across with 31'-32' seat pitch...in fact, I've taken cattle class on EK a few times.....much better than most other econ class...except for the "31's" on AA....

that being said, I've never tried UA's E+...

cheers.