actually that's quite good... 720p hi10p playback is ok... 1080p hi10p not good. There are forums talking about how to enable dts encoding in MX Player. it is simple to do (download a file and point to it from mx player).
right now the only thing that really plays 1080p hi10p is the Tegra3 though (though playback is not perfect...)
heh heh... not exactly android, but acer is releasing their Iconia W700 later this month. a 11inch Windows8 tablet with an i5 that should be able to decode just about anything you throw at it... all for the um... high high price of $900 usd.
Being a Software developer I am probably going to pick one up for um dev purposes yeah... not so I can have a tablet that can play anything.... um... anyone believe me? thought not... yeah it's a toy.