Huh? The iPad is pad-shaped and "pad" is a commonly-understood noun in the tech world to refer to these devices.
Same thing for iPod. It's pod-shaped (or was when it was introduced) and it's a pretty simple mental leap to classify this "pod" as a thing that you put your music "into".
By stark contrast, "Qwikster" has absolutely no mental, cultural or conceptual link to the product or service it describes. It's worthless as a name in addition to being confusing, already taken by various other services, impossible to spell, and dorky.
Not really debatable.