PSD to HTML5 is the most revised version of the HyperText Markup Language (HTML). So undoubtedly, PSD to HTML5 conversion is far better than PSD to HTML conversion. This is significant confusion among people when it comes to choosing a conversion process.
About PSD to HTML: HyperText Markup Language (HTML) is a complete markup language associated with HTML markup tags. You cannot run javascript in the background. It does not support audio and video elements. Again, modern browsers do not support HTML.
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 by all modern web browsers.
It is highly recommended by PSD to HTML developers during the conversion process.