They are all the same w/ the exception of the M3-- it has its own suspension. the Xi also has a different SP suspension due to its higher ride height. BTW, the 325 w/ sp or 325ci are also the same suspension. Sport paket 2 is a euro-only option- but I'm pretty sure its just the other options that get included (like black headliner, M steering wheel, etc), and the suspension is still the same. Not sure what you mean by "marketing hype" since I don't think BMW tries to say that they have different suspensions. I guess the sport package on all 330s is a little hyped since its really an appearance package- all 330s already have a sport suspension (but regular 330s come w/ all season tires as opposed to high performance ones). Hope this helps.