Wrong Return Values for Tar

[What A Man !]

Tar returns the same return values whether it succeeds or fails.
In perl, tar returns 0 whether it fails or succeeds. It especially is a
problem with a command such as 

system('tar -zxf failure.tar.gz')
print $?

system('tar -zxf success.tar.gz')
print $?

So, if you use a bad tar.gz file for failure.tar.gz and a good tar file
for success.tar.gz above, you will note that either one returns the same
value of 0. Why?

Regards,
--Dennis