So let me get this straight:

A southern movie director lets say got inspired by Hollywood Guy Pearce movie and he made a tamil movie with exactly same script

Then later or at the same time Amir Khan too got inspired by this Momento Movie and made a Bollywood movie with an exact scrit.

Is that what is it??

Well you know in most cases i've seen when a movie is made twice with same script the original movie's essence gets lost somewhere like the movie "Open Your Eyes", when Tom Cruse copied it and  presented it in "Vanilla Sky", the magic of that spanish movie had just wasn't there in Hollywood movie.

I am not tryin to be a smart ass here but you know get out of the box, try other foreign movies...Korean, French, Italian...they got some originality and are worth a lot. But then again i am sorry if i offended anyone. Happy Thanks Giving...eat delicious Tofu.