diff --git a/packaging/specifiers.py b/packaging/specifiers.py
index 507cb991..6fe4809e 100644
--- a/packaging/specifiers.py
+++ b/packaging/specifiers.py
@@ -393,18 +393,16 @@ def _compare_equal(self, prospective: Version, spec: str) -> bool:
             # segment.
             split_prospective = _version_split(str(prospective))
 
+            # 0-pad the prospective version before shortening it to get the correct
+            # shortened version.
+            padded_prospective, _ = _pad_version(split_prospective, split_spec)
+
             # Shorten the prospective version to be the same length as the spec
             # so that we can determine if the specifier is a prefix of the
             # prospective version or not.
-            shortened_prospective = split_prospective[: len(split_spec)]
-
-            # Pad out our two sides with zeros so that they both equal the same
-            # length.
-            padded_spec, padded_prospective = _pad_version(
-                split_spec, shortened_prospective
-            )
+            shortened_prospective = padded_prospective[: len(split_spec)]
 
-            return padded_prospective == padded_spec
+            return shortened_prospective == split_spec
         else:
             # Convert our spec string into a Version
             spec_version = Version(spec)
diff --git a/tests/test_specifiers.py b/tests/test_specifiers.py
index ce946689..47f2e6e5 100644
--- a/tests/test_specifiers.py
+++ b/tests/test_specifiers.py
@@ -307,8 +307,11 @@ def test_comparison_non_specifier(self):
                 ("2b1.dev1", "==2.*"),
                 ("2c1", "==2.*"),
                 ("2c1.post1.dev1", "==2.*"),
+                ("2c1.post1.dev1", "==2.0.*"),
                 ("2rc1", "==2.*"),
+                ("2rc1", "==2.0.*"),
                 ("2", "==2.*"),
+                ("2", "==2.0.*"),
                 ("2", "==0!2.*"),
                 ("0!2", "==2.*"),
                 ("2.0", "==2.*"),
@@ -404,8 +407,11 @@ def test_comparison_non_specifier(self):
                 ("2b1.dev1", "!=2.*"),
                 ("2c1", "!=2.*"),
                 ("2c1.post1.dev1", "!=2.*"),
+                ("2c1.post1.dev1", "!=2.0.*"),
                 ("2rc1", "!=2.*"),
+                ("2rc1", "!=2.0.*"),
                 ("2", "!=2.*"),
+                ("2", "!=2.0.*"),
                 ("2.0", "!=2.*"),
                 ("2.0.0", "!=2.*"),
                 # Test the greater than equal operation