I just want to know why they targeted only VRC...
Because it is an easy target... if you own 4.5 million coins. Or, in the immortal words of Gordon Gekko, because "it can be done, damnit!". A 51% attack is a guaranteed success. The Black Hand owns 4.5 million VRC.
Quite simple, really.
Iconic Expert stay the fuck outta this thread you lying sack of shit I wouldn't be surprised if you had something to do with the hack