Japan; buy a CD, get some upside?

Story about a florida bank offering a CD, that earns

 

Par value, or par value plus the upside the Tokyo REIT market enjoys.  That is, rather than a guaranteed 5% CD, you buy this and get some range between 0% to whatever Japanese real estate does.  So do you think Japanese real estate goes up 10% per year?  (making up that %, since I think you want to hope for extra return in exchange for your risk of maybe getting zero percent on this

 

Note it has tax issues; you pay tax each year not on actual $$ you earn, but on implied return

 

http://www.marketwatch.com/news/story/cd-tied-japan-real-estate/story.aspx?guid=%7BF86BC1BA-AE3E-4D46-BA7B-61BBE21AEEC0%7D