It really depends on where you're looking and in the same way that the "average" sale price of a condo or house is misleading (you should look at the median for a more accurate view - and take into account that real estate is neighbourhood oriented and not even city, regional, or countrywide) so is the average per square foot.
For example, the price per square foot of new mid-range condos in King West/Liberty village is between $450-$650 per square foot. My 3 year old condo would command about $450/foot right now, down from $500 at the market peak in Jan 2008. If you want to look at higher end projects from Shangri-La to Ritz Carlton to even the Bell Lightbox then you're starting at $800/foot. New condo prices haven't budged one iota and probably won't.
If you're to go out to Scarborough or Etobicoke and look at condo prices, then you'd be looking at a $200-$300/foot range. Hence the average of $388. It's a meaningless number. Just do your research in the area you're interested in, visit all the sales centres and remember that everything - including price - is negotiable, even in new condo sales.