Pricing is key with this, if Motorola make this cheap then it'll be an instant hit, if it's gonna cost more than 300 then it's a failure.
Do you even have the Galaxy S4? Even before I rooted it, touchwiz ran smoothly 90% of the time (which then became 100% when I installed apps like nova launcher). Now I'm running Cyanogenmod 10.1 and this phone is litterally GOAT status. Only thing really holding it back is the shytty speaker it has but that's a small price to pay for the huge screen, insane speeds and good battery life.
I'll buy the Moto X if the price is right but to state that it's better than the flagship phones of this year is ridiculous. If I want a 100% smooth UI and specs similar to the Moto X I'll go back to iPhone. Apple offer me a greater customer service, a greater experience out the box and a cloud system that literally does everything for you. Heck I'd even pay that extra 150 premium if this phone is more than 300.