Gatland said: "When I went back to New Zealand over Christmas I had access to the analysis files used by the All Blacks against the Lions.
"It was very interesting, especially the work they did on the key English players. Now I can pass that information on to our lads."
The All Blacks whitewashed the Lions 3-0 in the Test series, but neither Henry or Hansen guided Wales to victory at English rugby's HQ. Gatland, though, has lifted three Premiership titles and the Heineken Cup with Wasps at Twickenham.