Well, I pre-ordered for 360 over a month ago when newegg had a pre-order coupon ($12 off). I thought about switching and loosing the discount, but 360 is my platform of choice and I am a cheap ass. I figure by the time I finish story mode, challenges, etc. the patch will hit.
Also, BB:CT for 360 had a similar issue, and there was a day 1 patch in NA. Arc Sys knows they have to get their patches out quickly.