One plant dies. One plant thrives!

So last night I made sure everything looked fine.  There was nothing wrong at all.  All of a sudden the next morning, i found the smaller plant, has withered!  I was so upset, but it is ok!  Here is another view of the plant. 

This is the plant when it withered :(

I am hoping that everything will be ok now because I just replanted the plants into a bigger pot.

This is the big plant  with another big leave coming in!