It's the first time I hear about this reviewer site; can't deny or confirm it's trustworthy. Even Cateye Volt 800 isn't good enough according to their data.
Anyhow, Niterider Lumina Micro 550 got much better representation from their side and retails for $35 also. There is a bunch of Luminas that retail for sub $50.

Personal experience aside, I put more trust in road.cc reviews and still, for $25 the Swift 450 is more than a decent option. If you suspect your unit is defective, you can always reach out to customer support or just exchange it.