How to compare the Property Investment Portfolio

Nowadays, property investor tend to compare how many properties they had in their portfolio, e.g, if A has 10 properties, total loan is $1.5M and Compare to B has 4 properties also with a total loan of $1.5M. Are both of them are the same?

It is a tough questions to answer, it has to depends on what are they comparing too? Just purely number of properties? Comparing the quantities or qualities?

Look at the 6 investors portfolio below:

Investor	# Property	Loan Size	Cash Flow	Networth
A	10	$1M	$10000	$1.3M
B	5	$500K	$5000	$650K
C	4	$750K	$5500	$1.0M
D	3	$1M	$1000	$2.0M
E	10	$2.1M	$2000	$1.5M
F	7	$2.8M	$500	$4.0M

Which one would you prefer? Obviously if is very hard to choose from right?
Would you prefer investor A or Investor F?

Is there any different from Investor A Vs Investor B?
Which one is the riskiest investor?
Which investor has the most sustainability portfolio?

If someone just comparing the number of property, Investor A and Investor E has the same number of properties which is 10. Investor E has higher loan size and also higher networth. But the Cash flow for Investor E is lower.

As such, if someone just compare the number of properties own, is it good enough?