Most languages have a single implementation that everyone uses. Unless I&#x27;m interested in writing a new implementation (never), then I&#x27;m going to be interested in comparisons of languages based on their well supported implementations. Otherwise we get into discussions about sufficiently smart compilers (<a href="http:&#x2F;&#x2F;c2.com&#x2F;cgi&#x2F;wiki?SufficientlySmartCompiler" rel="nofollow">http:&#x2F;&#x2F;c2.com&#x2F;cgi&#x2F;wiki?SufficientlySmartCompiler</a>). I get what you&#x27;re saying, but there are tons of people who are justified in only caring about implementations.