There is at least one review on each page that claims the submission is stolen.
http://www.newgrounds.com/portal/readreview.p hp?id=280260
http://www.newgrounds.com/portal/readreview.p hp?id=363489
http://www.newgrounds.com/portal/readreview.p hp?id=186596
http://www.newgrounds.com/portal/readreview.p hp?id=289204
http://www.newgrounds.com/portal/readreview.p hp3?id=28001
http://www.newgrounds.com/portal/readreview.p hp?id=233039
http://www.newgrounds.com/portal/readreview.p hp?id=316524
http://www.newgrounds.com/portal/readreview.p hp?id=19819&page=2&sort=rating
http://www.newgrounds.com/portal/readreview.p hp?sort=date_mr&id=26877&page=2
http://www.newgrounds.com/portal/readreview.p hp?id=362073
http://www.newgrounds.com/portal/readreview.p hp?id=119899&page=2&sort=date_mr
http://www.newgrounds.com/portal/readreview.p hp?sort=date_mr&id=13919&page=3
http://www.newgrounds.com/portal/readreview.p hp?sort=date_mr&id=13919&page=2
http://www.newgrounds.com/portal/readreview.p hp?id=192818