The also said VF5 was a PS3 exclusive .So far Sega has said it's not going to be online for either console.
If online was intended for XB360 and not for PS3, they'd be sure to suggest otherwise and not lose early sales of the PS3 version.
so, online is certainly something that could be wished for without an absolute certainty of disappointment. Though I expect Sega want to avoid online lag as that'll cripple the fast pro-fighter experiencel, which would explain a reservation to going online.