Is comets greater than asteroids

Answer: Yes very much

Explanation: A comet could pack nine times more destructive power than an asteroid of the same mass

Comits unlike asteroids are made of ice and dust - not rock. This results in the tial you can see as it rounds the sun, a threat from a comet is much greater then an asteroid as it would leave a much bigger explosion, and do more damage as it travels in random paths unlike asteroids.