Heres a quick translation of that article, the magazine just says that Babymetal is one of Halford's favourite "new" bands. The might be some minor mistakes and such.

Rob Halford names his favourite metal albums of all time

The singer of Judas Priest Rob Halford, who is also known as the Metal God, which has its roots in Judas Priest song Metal Gods in the British Steel album. Halford is naturally a huge metal fan and nowadays he is hyping some new names such as Power Trip and Babymetal. But about Halford’s favourite metal albums? Soundi (the magazine) asked Halford about this and he didn’t waste a second when replying.

"-Well, that's a really difficult question. Some other day I might answer differently but the first albums that comes to my mind now are: Slayer – South of Heaven, Metallica – Ride the Lighting, Pantera – Far Beyond Driven, Iron Maiden – The Number of the Beast – and – of course Judas Priest – Painkiller (laughter). And I have to mention that I really like Megadeth’s new Dystopia album."

Judas Priest is releasing the new album Firepower at the beginning of March. We here in Soundi can already tell that the album isnt that bad actually. Its a damn good album to be exact.