When the German 88-mm tank gun received spectacular press following its performance in Libya and Egypt, British and American readers began to fear that the Nazis had developed a weapon unmatched by anything the Allies had to offer. This was simply not true. The German 88-mm had an intimidatingly long barrel and could fire shells at around 2,800 feet a second, but that wasn't anything our 3-inch AA gun couldn't do. The German weapon couldn't fire rockets, as the public feared; if anything, their antiaircraft weapon only temporarily "outdid" ours because their armies had managed to managed to beat the British and Americans in converting AA guns to all-purpose weapons.
Read the full story in "American Guns Do Not Lack Punch, They Are--Tank Killers With a Wallop"