I sort of agree but don't. Quad core processors help take the load off the other processors which helps in over all performance and battery life. Now I agree that android needs to continue optimizing the software but with people wanting their phone to come with features that does everything from help them work out, talk to them, start their cars, and cook dinner for them, then you can only optimize so much. The reason the galaxy devices sell is because of the features. Plus these devices are performing well even with all the features (see this article Google Play edition reviews: The HTC One and Samsung Galaxy S4 | Android Central).
Motorola needs that it factor that will sell phones. For the galaxy devices it is the s - features. For the Htc one it is the look and feel. Motorola has been hindered partly by their lack of software innovation and their contract to one carrier. Samsung and Htc building for multiple carriers including overseas gained experience about what sells and what doesn't. Samsung and Htc had some hiccups along the way but it helped them understand what people want. Sadly motorola is behind the power curve and the best thing for them is to serve customers beyond verizon. Motorola with their radios and build quality can really do some damage once they find that "it" factor that will separate them from the pack. And coming out with a dual core phone when even cheap phones are rocking quad core isnt it.