Hi,
The point of using the Joomla page header "IS" to use the Joomla H1 style (so ALL our page headings are the same; constance). This is an acceptable workaround/alternative to using your component's header which isn't the same as that (that's OK when you give the site admin the opportunity to choose if he/she prefers using the default h1 style).
The problem is that now, if one wants all his page heading to be the same, he needs to hack your files to replace it with an H1 or, alternatively add a module above that page with an H1 one in it. We never should have to resort to hack a component file as that creates a nightmare when updating components.
Danny