How does the Delcro compare to traditional velcro straps on the market (such as those on RM)?

The Delcro is made entirely from fabric, while traditional velcro straps tend to have the velcro material stitched onto a base canvas or leather material.
Delcro is fully adjustable as the loop surface occupies the entire surface of the strap, while the loop surface of a traditional velcro strap only occupies a small portion of the strap (and is not really adjustable).
The Delcro is also much softer and thinner, and does not have as much structure as traditional velcro straps.