Android x86 devices suffer when developers include binary libraries and don't add x86. At the time of Intel's x86 for Android push, Google didn't have good apk thinning options, so app developers had to decide if they wanted to add x86 libraries for everyone so that a handful of tablets/phones would work properly... for the most part, many developers said no; even though many/most apps are tested on the android emulator that runs on x86 and probably have binary libraries available to work in that case.

IMHO, If Intel had done another year or two of trying, it probably would have worked, but they gave up. They also canceled x86 for phone like the day before the Windows Mobile Continuum demo, which would have been a potentially much more compelling product with x86, especially if Microsoft allowed running win32 apps (which they probably wouldn't, but the potential would be interesting)