 In the European version of the film, Kane says, "Highlander is out there  somewhere, and he owes me for all those years." after he escapes from the  cave in 1994.  In the US version, he says, "Highlander is out there  somewhere, and he owes me 400 years."  It makes a little more sense in the  European version because Kane would have no way of knowing how long he was in  the cave.