I just came over a site which had a sitemap like that... but with a different URL for each setting for the 100+ expand/collapse options.
Had to give Google a try.
It knew about 200.000+ variations to that page.
Listed about 450.
Same page. Just different tabs expanded.
how come it's not dupe content? how come it's in the index? well... did I mention I was on a data gathering hunt for high trust sites? this was one