In between perl-Compress-Raw-Zlib, which is the newer release? 2.023-119.el6_1.1 or 2.020-127.el6 ?

Issue

• The package perl-Compress-Raw-Zlib-2.020-127.el6 is installed in Red Hat Enterprise Linux 6 machine.
• There is a package perl-Compress-Raw-Zlib-2.023-119.el6_1.1 available in RHN on RHNS, but its not getting installed or updated.
• Which is the newer release of perl-Compress-Raw-Zlib package? 2.023-119.el6_1.1 or 2.020-127.el6 ?
• Searching for RHSA-2011-0558 and RHSA-2011-1424 shows that the fix is within what appears to be a newer perl-Compress-Raw-Zlib-2.023-119.el6_1.1' package, but the latest is the2.020` branch.