On Sky afterwards they showed the win percentage for the team at the Principality since 2000 (30%) and the CCS (44%).
They also stated the pitch is bigger and suits better footballing side, which is common sense. I can't believe they are discussing it to be honest, I've been to plenty of internationals at the Millennium, and by and large the atmosphere's been terrible.
I don't understand Vokes' comments either, as up until then we were constantly being told that the team wanted to play at the CCS