As a long time sound engineer and sound designer I do have a fairly good perception of sound, knowledge of sound recording, mixing etc. I’ve come across a lot of people who have a lot of technical knowledge of equipment but have a terrible ear for what things should sound like and some people who are geniuses at mixing with the most basic equipment. If I was to put myself on a spectrum between the two extremes I would be nearer the latter, which is the best end to be at. It’s easy to make a Steinway grand sound like an upright piano but not so easy the other way round. I’ve heard both. My opinion is based on both how good or bad it sounds and knowing a little of the limits of what’s possible. I’m sure with limitless development time the audio could be closer to perfect but we know they don’t have that, and to start from less than ideal recording material, this is a fairly good job. Apart from the lack of clattering as I said. I’ve also been on the London Underground many times so I know it’s not exactly right. But my opinion is far from being ridiculous. That’s all I can offer, my considered opinion.