I did it yesterday and it's amazing how similar they are in every single part!
The fact is that in the end the suit it is so simple in design that if a single curve is slightly different you would notice it and the overall impression is different, because your attention is not driven away by details. It's like trying to reproduce a great melody with few notes, if you don't catch all the subtle nuances it won't work.
The greatest and simplest designs are the hardest to reproduce! I think this is what Gino or T*E intended in another topic when he said that every recast is better than a sculpted armor: a recast, even if it's bigger, smaller or less detailed, follows precisely the curves of the original, while a sculpted one guesses them from low-quality images taken from a motion picture filmed with different focal lenghts and watched on a flat screen by human eyes. But despite all this I chose the TM
Now that I've trained my eyes I really can't stand the inaccuracies in the FX armor and bucket, while when I saw it the first time I tought it was perfect!
I think that all the little asymmetries are made on purpose to make the suit more "real", interesting and friendly to our eye, as the bucket is asymmetrical like the human faces are (it wasn't a technical bound, they could have done it symmetrical if they wanted).