There's also the Heihachi over Jin comparison. Jin's more popular and he's the face of the franchise, but they went with Heihachi because he's old-school and has been there since the beginning.
Namco's also a much more reasonable company than SE has been recently. For example, they released XIII-2. And they made two main-series games that are nothing like the rest but are for some reason main series (XI and XIV).