diff -r f2048d9c666e -r e9e41c88b03e src/share/classes/com/sun/tools/javac/code/Types.java
--- a/src/share/classes/com/sun/tools/javac/code/Types.java	Thu Nov 04 12:57:48 2010 +0000
+++ b/src/share/classes/com/sun/tools/javac/code/Types.java	Thu Nov 04 12:58:29 2010 +0000
@@ -3151,7 +3151,7 @@
         return to.isParameterized() &&
                 (!(isUnbounded(to) ||
                 isSubtype(from, to) ||
-                ((subFrom != null) && isSameType(subFrom, to))));
+                ((subFrom != null) && containsType(to.allparams(), subFrom.allparams()))));
     }
 
     private List<Type> superClosure(Type t, Type s) {