PSD to HTML5 is the most revised version of the Hyper Text Markup Language (HTML). So undoubtedly PSD to HTML5 conversion is far better than PSD to HTML conversion.
This is a big confusion among people when it comes to choosing a conversion process.
About PSD to HTML5: It is the most revised version of HTML. It supports all the features which are not supported by HTML. HTML5 supported to all modern web browsers.
It is highly recommended by PSD to HTML developer while the conversion process.