Tiny compact sensors can't do everything something like a micro 4/3 sensor can do, and those sensors can't do what something like an APS-C sensor can do, which can't in turn do what a full frame sensor can do and so on to the biggest sensor you can buy.
Most people who know digital photography know this, however Olympus' advertising assumes that the reader doesn't know this. Just like they used to claim the Trip 35 could do everything an SLR could do. And that's what I have against these cameras. It's not that they are bad cameras, far from it I'd rather use one than something like a Canon G11, it's that they are being sold as something they are not. Nobody sells their entry level DSLR as being just as good as their top of the range full frame model so why do the makers of this micro 4/3 stuff sell it as if it will produce results as good as an S2 or a 'blad? Maybe Olympus do it because their attempts at a DSLR have been so lame.
BITD nobody was really fooled by the Trip 35 advertising or the Pentax 110 SLR, but it seems from what I see online people are fooled by the current Olympus advertising.