As the world enters economic recovery and banking systems mend, real estate markets are doing their own healing, but at markedly different paces.  Asia's economy is in the lead, thanks to a more-rapid-than-expected rebound and renewed attention from investors. In Europe, improving investor sentiment is driving activity for a specific band of prime real estate. In the United States, commercial property markets continue to struggle amid weak corporate demand and worries about the willingness of lenders to recognize asset value declines.