Think it's not justifiable to call them "clones" doncha think? Think it's a pity for reviewers to dismiss it as clones because it makes the game seem like its rubbish, which isn't the case. I would call something like Veggie samurai a clone of FN instead because there isn't even any thought process in changing the gameplay!
I have played both Fruit Ninja and Paper Ninja and i think there's a lot more challenge in cutting objects with defense abilities... It was annoying at first because I barely got past the 4th level but... whoaa.. there's the challenge! And once you get the hang of it, it is very addictive!
Oh, I love the cute graphics... and my name's Sally! HAhaha!