I genuinely think that's part of what it is.
@Famine's
write-up a few posts ago is interesting, he actually puts them "up there with Ford and Vauxhall", his experience across those ranges is greater than mine (and professional) so I'll take his word for that, I'd still put Mazda
above Vauxhall from my own experience of both, but that still doesn't make Mazda that marque of sportiness/distinction that Americans seem to perceive it as (in my interpretation, at least).
I'm not down on Mazdas by any means - I'd have another MX-5 right now if my bloody keyboard would fit in it