These are apples and oranges- Yes both real estate, but with significant differences.
Some questions?
What's the likelihood that the CA duplex increases in value organically? I assume you will self-manage? Purely buy and hold.
In these uncertain times, why wouldn't you consider a preferred position with the syndicator? Sure, over the last several years, there was an unforeseen interest rate climb that hurt many very good operators, and LPs are upset. The market can move in three directions: up, down, or sideways. Where are rates in the cycle? Of the bad deals out there, I wonder how many deals went bad solely due to interest rates.
What about diversification? How much other real estate do you own as an asset? Syndication provides a window into other markets, different asset classes, and a completely different strategy.
Lastely, whats your time worth? Yes there is a lot of front end due diligence work to invest via syndication but they aren't going to call you in the middle of the night to resolve a leak, tenant issue, fire, or eviction.
Already, good operators are buying broken deals at very smart levels, if their track record proves their worth, leveraging their expertise is what you are investing in.
How about stretching and doing both? Theres no right answer its all about taking action.