thesachd
Banned
Again. Everyone keeps bringing in Samsung devices as if they we're representative of all of Android.My experiences...
Low end device - Samsung Galaxy Fame - Single Core. Android Jellybean (Samsung won't release an update to KitKat) is horribly sluggish. Almost unusable after a few apps have been opened and closed. Android simply can't run satisfactorily on a single core device with 512MB RAM. No ifs, not buts, it can't. Period.
Mid range device - Samsung Galaxy S3 Mini - Dual Core - Android Jellybean (again, no update from Samsung) runs much more smoothly, on par with a low end WP phone.
Slightly higher mid range device - Moto G 4G - Quad Core - runs very smoothly.
(Incidentally, the camera on the Fame is leagues above the one on the Moto G 4G, but that's another story...)
It's easy to make an OS run smoothly on a well-spec'd device, harder on a low spec'd one. WP manages to run smoothly on low end devices.
YMMV
Use a stock Android device, it flies. And beats Windows Phone in performance for quite a few things as well.