In all fairness, the author could also have made some points where PHP is better than Perl.
There isn't a single thing about the PHP programming language that is better than in Perl. Yes, some things are different, like PHP 5's new OO system, but that doesn't automatically mean it is better.
The things in which PHP excels all have to do with its use as a templating-like language, integrated in Apache. And those are things that Perl doesn't do AT ALL, so a comparison would be weird already. There is no popular PHP-like Apache integration that uses Perl. mod_perl is far too powerful and dangerous to let loose on bulk hosting servers, but PHP lacks the power to configure Apache. mod_php and mod_perl do very different things, while PHP and Perl are both programming languages. A comparison showing which of the Apache modules is better would be wrong.
The author would like to learn where you think PHP is better than Perl, though. And he accepts well written patches to the document in question.