Here’s what I think about this suspicious timeline between f(x) and Red Velvet:

I think SM didn’t really have specific schedule for Red Velvet at first, however, they have prepared the members (seeing how fast things were done) but something in f(x) (I am suspicious about Sulli since she is the one who is missing now) happened and SM has to think quickly. Also, SM sees WINNER’S debut (I really think this is one of the reasons) so they put Red Velvet’s date near WINNER’s debut just to…block them? (I even found it ridiculous but it can happen). I don’t think SM wipes out f(x) or even SNSD for Red Velvet NOW. Those two are still their money maker…maybe f(x) isn’t that important in SM’s eyes but they are still popular girl group. For filling the emptiness, they probably debut the girls that they have been prepared before. So it’s just like this year is just not a good year for SM and we just hope they can find a new…..fortune-teller(?). 

I don’t even know why I bring fortune teller LOL 

sorry for blabbering haha

it’s just my reaction to the bashing against Red Velvet. Those thing just make me notice them more. I didn’t notice them at first but now look at those bashing! Seriously, guys, you just make the girls have more attention than before!

Or maybe that is SM’s new strategy? LOL 

I need to put that too in my theory haha