Quotes from German Generals to back up that claim please.
"Patton, he is your best" - Von Rundstadt
Hanson, Victor Davis, The Soul of Battle: From Ancient Times to the Present Day", New York: Simon & Schuster, ISBN 0684845024 (1999), p. 13
"the most astonishing achievement in mobile warfare." - Rommel
Terry Brighton. Patton, Montgomery, Rommel: Masters of War. New York: Crown, 2008. p. xvii
""Patton! No doubt about this. He was a brilliant panzer army commander." - von Manteuffel
McNeese, Tim, Battle of the Bulge, p. 78
That said, I haven't read the source documents that I list, they are references on Patton's wikipedia page. I will give that as a warning to their veracity, but more or less, I trust Wikipedia these days, especially when they have citations. I did not list the uncited quotes from Jodl or Kesselring.