I cannot answer that question for you. It is entirely a personal thing to consider whether a device is a dud in one's eyes. If I didn't upgrade from a 4 to a 4S then, from my personal perspective, it is a dud because any changes in it have failed to trigger the need to upgrade. I don't care how...
It's a matter of personal perspective. From yours, those improvements are important enough to warrant an upgrade, therefore it's not a dud.To someone who was expecting a major change to the form factor (i.e. a larger screen) the Iphone5 would be a "dud" because it fails to meet the level of...
How about a dud like in it doesn't offer anything new enough to bother upgrading from a 4 or a 4S. If there is nothing really groundbreaking, other than the addition of 4G LTE, why bother upgrading?