Both desktops suffer from similar problems anyway. Test one and it very likely applies to the other as well.
Also, more importantly, whatever was tested was a mix. It was a distro with both "KDE" and "Gnome" applications - whether it was "gnome panel" or "kde kicker" that displayed the main menu is pretty much irrelevant when the user doesnt find the right menu entry. The labels are the same anyway since they come from the software packages.
It's about time we started to look at the real world: people use a diverse mix of software - whatever does the job, whatever their sysadmins or distro packages for them. We should care about the whole "free desktop", not just one single project really.