Hang Lung Properties vs Chip Eng Seng

Hi,
While reviewing the workshop materials, I found a scribble noting that Hang Lung has more recurring business than Chip Eng Seng, suggesting preference for Hang Lung over Chip Eng Seng. However, the workshop was a while ago and my memory is a bit vague now and I can’t remember exactly the reason of the preference.
From a quick comparison of their annual reports (the ones used for the workshop), it seems that Hang Lung’s business model is simpler: involving only property leasing and sales. In contrast, that of Chip Eng Seng is more diverse and complex, involving property development, construction, hospitality, education, investment and others. 
Could the reason for the preference for Hang Lung be that property leasing is recurring in nature (i.e., if the tenants renew their leases). In comparison, for Chip Eng Seng, they most likely have to secure a new buyer for each property development and construction project (non-recurring)?
Thank you.
Tony