You are comparing in wrong way. 

Paid 10% downpayment for self-own properties and getting rental income is a form of leverage.

Buying reit, you need to pay 100% cash on the purchase, there is no leverage on personal side.

Both risk is different to start with, how to compare?

It is not yet taking into account, of hassle of management of self-own properties, and liquidity issue both are different to start with.

Hard to compare, as not same fruit, not even same type of food.

Rental income only valid for condos in city as landed properties every where else, rental yields cannot compare after the spike in property prices.

But in terms of liquidity, REITs is much better. Less headache in terms of maintenance. No need to worry much about tenants complaints. Aka a managed property.

Plus buying an actual property is serious commitment and maintenance. Properties might have a better yield calculation wise, but too many uncertainties in tenants and risks. This you managed yourself, if you actually hired a property manager, the yields itself might not be as attractive unless you already own a previously paid off property.

Like I said, it's 2 different type of investments as the risks, liquidity, personal time investments, etc. Not same type of fruit.

Have you check out this topic started by prophetjul, interesting, wish more inputs & debates.

Reits VS Properties
http://forum.lowyat.net/index.php?showtopic=2207790&hl=