I guess by "why Telerik has chosen this setting" you address the VSExtensions scenarios. If this is so, here is a brief explanation of our decision. The scenarios provide a checkbox to enable or disable the site-wide compression level by default. The scenarios suggest the addition of RadScriptManager and RadStyleSheetManager to the page by default, as this is an approach for an optimized output in terms of g-zip compression and combination.
You can find more information about the benefits of using RadStyleSheetManager or RadScriptManager in their respective help articles. Additionally, an explanation of the built-in CDN support is also available for each of these controls.
Please let me know if there is anything else specific that you think we are missing in our documentation. We will be glad to improve that and to provide you with the information you need.
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!