Ok, I assume, you mean something like this (around Munich and Berlin):
http://www.vdiplomacy.com/map.php?
gameID=16191&turn=10&mapType=large
The Munich support is cut although it is support held by even two units. So everything works as it should with common rules.
If somebody told you, that red would win with the rules used on vdip, he simply told some rubbish.
Did I get your point now?