You would have gone with a language that was not released yet? Two years later you would have gone with PHP6? A more realistic approach would have been to comp

You would have gone with a language that was not released yet? Two years later you would have gone with PHP6? A more realistic approach would have been to compare PHP5 with Perl5, where the latter would offer a migration path to Perl6 if it had become popular. (Not only had Perl5 compared favorably back then, the core of the language has been stable, deployment looks similar and there has been much fewer security issues with the language itself.)