I don't own either game (yet), but for what it's worth, all the review sites I've seen which have reviewed both games give GST the edge over VT2009.
Here's my thread full of reviews and discussion about the two games:
http://www.vgchartz.com/forum/thread.php?id=76266

"The worst part about these reviews is they are [subjective]--and their scores often depend on how drunk you got the media at a Street Fighter event." — Mona Hamilton, Capcom Senior VP of Marketing
*Image indefinitely borrowed from BrainBoxLtd without his consent.







