User blog comment:Chimadino/Most Powerful Ninjago Characters/@comment-26921673-20190113214355/@comment-26537965-20190113223440

Just going to copy and paste something from his page

Garmadon stated, that after reaching his True Potential, his powers surpassed even those of his father's.
 * This is further proven when a full power blast from Garmadon was strong enough to knock the strongest and first dragon (Firstbourne) off of Borg Tower, sending her into unconsciousness once she hit the ground.
 * However, there are also evidence to prove the contrary. For example, unlike the First Spinjitzu Master, Garmadon had to use his full power to create the Colossus from materials, while the First Spinjitzu Master had no need for that and could create entire realms. Also, it is likely that he simply just didn't give Firstbourne a chance to fight back as he quickly blasted her before she could attack.