BRAHMOS can achieve only 2.8 - 3 Mach
check this link:
BrahMos - Wikipedia, the free encyclopedia
Where as CM-400AKG (CARRIER KILLER) can achieve 5.5 Mach.
2-
ANTI-RADIATION MISSILE
3-
FIRE AND FORGET SYSTEM,which makes it superior to BRAHMOS in all aspect of technology.
4-LOW-COST MISSILE
5-JF-17 Thunder can carry 2 CM-400AKG,whereas SUKHOI-30 can carry only one BRAHMOS at a time.
The 400 kg CM-400AKG is termed by CASIC as hypersonic since it can reach speed greater than Mach 4 at its terminal stage, and its guidance system includes GPS, onboard radar, and an image recognition system that can identify a specific target, it can also be pre-programed to destroy the ground targets with precision by uploading the digital imagery of the target or it can be re-targeted using its active radar seeker. Originally developed as a air-to-surface missile (ASM) against fixed and slow moving target,[10] an anti-shipping missile (AShM) is also developed for Pakistan.
The two difference CM-400AKG models can be easily distinguished by the difference between the arrangement of forward control surfaces of the two model: the AShM version has four short and smaller forward control surfaces,[12][13] while the ASM version has four much larger forward control surfaces.