Interesting reason; leaked bootleg copies. Love the outcome though.

I like both versions and after listening to the EU version for years, it was a real surprise when I finally bought the Japan edition a few years ago. Don't know which one I prefer, I prefer some versions on the US/EU, and others on the Japan issue. Undiscovered Soul is another one that is really different, as is Made In America with (I believe) a slight different arrangment.
The All That Really Matters bonus track is nice as well, except for the "You're not alone" ending.

Must have for a Bon Jovi/Sambora fan in my opinion.