Medfield is fiercely overrated, thanks to having a big software advantage in Javascript, since unfortunately the current state of mobile benchmarking uses a lot of poor JS benchmarks. In native tasks Cortex-A9 usually beats it clock per clock, and the clocks are almost the same, especially when not counting turbo where who knows how long it can actually sustain 2GHz - probably long enough to look good in Sunspider. HT is a very strong advantage for Atom by itself, but when it's up against competitors that have two or even four real cores it just can't compete. Cortex-A15 is going to make short work of it, and if Apple gets serious about CPU performance and ramps the up the clocks in A6 the next iPad could put the hurt on Medfield too.
The power consumption is fine for low-CPU tasks, as you would expect, but no one has measured it under load (or even while running any kind of real game). It also has a big performance penalty when it has to emulate ARM NDK stuff, again something reviews don't often investigate, just trumpeting that everything runs. All we have is Intel's claimed numbers, which are on the low end of okay, nothing that'd make you think that it'd kill your battery instantly, but still not especially competitive. The "omg x86 in phones lolz" attitude is unwarranted; IMO Intel has a perfectly fine shot in the future with their process advantage, they just need to do a better uarch than their current Atoms. Silvermont on 22nm next year is supposed to be new and better.
WINE would be cool, but first you need that on Android or someone needs to get something else on these phones.
So far Medfield phones have been released in a lot of foreign markets (or should I say, non-English speaking at the least - mostly poorer/developing nations, but also France IIRC) but have been doing poorly. This is the first release from a big worldwide vendor, although apparently still in a limited market (UK only?).. I don't know what's keeping Intel out of major markets like USA and Japan but whatever it is they need to fix it.. But first lets see if anyone in these target markets actually shows interest in these phones. Motorola is a good start, AFAIK their strongest partner (and was known to be making a Medfield phone for a long time, this is no surprise, pretty much right on schedule) but they're going to need more than that. At least they finally managed to put ICS on a Medfield device.