somehow, her beauty comes from the piano. i'd like to have seen her play a less 'flimsy' sounding piano, though, as she is perfectly capable of playing a stiffer one. the extraneous noises from that piano were noticeable and detracted, imo, from the unity of the 'chorale' sound.
also, i felt that she was not sensitive at one point to the speed that the chorale was taking the piece at their entrance (sopranos) - and yet, brought it into check really quickly. i would have liked to see her take it at the speed that the conductor was intending and being less of a 'tennis match' - although she never intends it this way. it just comes out because she knows what she wants from a piece. that is why - pianists should also be conductors. then they can do whatever they like and not be relegated to #2.
argerich is way more mature than grimaud will ever be - but that doesn't matter because one is dramatic - and the other is light and french sounding. they aren't competing. in fact, they compliment differences - but helene's repertoire should be more limited, imo - to things that show off her amazing talents and not to rachmaninov and things like that. for one thing - she is little. littler than her pics show. and she can easily whip out things - but that doesn't mean it's musical in the deepest musical sense. i think - she has to find her flavor and stick to it.
argerich is able to have a wider rep - but she's also older. and sultry.
helene is not as sensitive as argerich, imo - but, she can be extremely sensuous sounding when she wants to. it really seems to me to not be any sort of competition. helene has a good tone. argerich has the best. perhaps the pianos make a bit of difference. helene rushes. argerich takes her time.