I've only seen that kind of button lay out on screwed up American conversions or...drum roll...CvS1 cabinets that somehow did not become CvS2.
Quick note on the button layout on your CvS1...and why there may be some confusion (not to sound condescending if you already know all of this):
Capcom vs. SNK 1's button layout was an attempt by Capcom designers to accommodate both audiences. It contains the same four buttons SNK players are accustomed to, yet sticks to the two uniform rows Capcom players are accustomed to. IIRC, both audiences thought it sucked (Capcom's audience definitely did). By part 2, Capcom said, "Fuck it, go back to our standard" (thank fucking god...I think you can tell which camp I fall under with fighters).
What you're seeing with SNK vs. Capcom, IMO, is the SNK designers sticking to the CvS1 formula for several, likely, reasons. MVS is 4 buttons (duh!). The CvS1 player base could easily transition over (unfortunately they were two years too late -- CvS2 had eliminated that button layout). It maintained a sense of unity between CvS and SvC...again...would matter a lot more if they released before CvS2 hit.
I've spent way too much time around this stuff.