Re: 'decent specs' require a bigger battery
'decent specs' are not necessarily measured in CPU, resolution or battery life.
To me the decent specs are the features of this phone (dual SIM, removable battery, SD Slot, Cyanogen), I don't care if it runs at 4.6GHz or has a 3200x1800 resolution, and those features I mentioned could very well be available in a 4-incher. If the smaller size means smaller battery, means lower performance, I can live with that. I can also live with a thicker phone, I've had a N95 for years.