I've owned both Chedech and Brompton. Heres my humble comparison.

Comfort:
Chedech - slightly larger wheels and carbon frame is pure smoothness

Weight:
Chedech

Price to weight ratio:
Chedech

Size:
Brompton

Versatility:
Brompton

Parts support availability/Customization:
Brompton

Resale Value:
Brompton

It really depends on your explicit needs. Neither of them is inferior in all ways.

Cheers and happy riding.