Touch-screen comparison between the iPhone, HTC Droid Eris, Motorola Droid, and Nexus One. Click for larger version. Moto Development Labs Moto Development Labs devised a simple method of analyzing capacitive touch screens using drawing programs. They put the iPhone, the Nexus One, the Droid, and the Droid Eris through the paces and proved not all touch screens are created equal. Using only your f