UK Blu-rays of Flags of our Fathers & Letters From Iwo Jima?

[Kuros]

Is the UK Warners release of Letters From Iwo Jima the exact same version that was released in the US? I mainly want to know if the UK Blu-ray of Letters From Iwo Jima has the same lossless Japanese Dolby TrueHD track that's on the US disc?

My understanding is that other European countries got a different version of Letters from Iwo Jima from Warners, with lossy Japanese Dolby Digital 5.1 and various foreign language dubs on the disc as well. Did we get this version in the UK or the better US version with the Japanese Dolby TrueHD track?

Also has anyone done a picture quality comparison between the single disc UK Flags of our Fathers from Warners and the double disc Dreamworks release from the US?

Is the picture/compression quality of the US version noticeably better because the film is on a sepearte disc and there's no PCM track hogging the bandwith?

Also is it true that the PCM sound on the UK disc is 24bit/48khz at 6.9bps?

If true it's very unusual because Warner Bros only tend to encode PCM audio in 16bits.