Thank you for trying Test Studio.
In general Test Studio is the best way to test RadControls for ASP.NET AJAX or Silverlight. The test recorder automatically detects the controls and exposes commonly used verifications. Those are applied on logical elements (grid row, scheduler appointment, etc.) - not HTML/XAML elements.
However Test Studio can identify not only RadControls, so there shouldn't be a problem to identify your controls.
Please let us know if you experience any problems during the automation.
the Telerik team