Which of the following regarding air abrasion is false?

Roughening by air abrasion by itself is not a substitute for acid-etching techniques. Roughening improves bonding. Acid etching alone or after roughening, however, always produces a better bond than air abrasion alone. Contemporary air abrasion equipment is helpful for stain removal, debriding pits and fissures before sealing and micromechanical roughening of surfaces to be bonded. Ref: Sturdevant's art and science of operative dentistry. 4th edition page 328