That’s not how the rules of judging are written. Damage or impact is weighed more heavily than top position. The man on top needs to inflict impactful stiles or submissions in order to take the round.
NOTE: "Impact" is the substitute for "damage." The definition is meant to train judges' attention towards effectiveness over things like flashiness or top control without any damage.
Effective Striking/Grappling
“Legal blows that have immediate or cumulative impact with the potential to contribute towards the end of the match with the IMMEDIATE weighing in more heavily than the cumulative impact.
Successful execution of takedowns, submission attempts, reversals and the achievement of advantageous positions that produce immediate or cumulative impact with the potential to contribute to the end of the match, with the IMMEDIATE weighing more heavily than the cumulative impact.”
It shall be noted that a successful takedown is not merely a changing of position, but the establishment of an attack from the use of the takedown.
Top and bottom position fighters are assessed more on the impactful/effective result of their actions, more so than their position.
This criterion will be the deciding factor in a high majority of decisions when scoring a round. The next two criteria must be treated as a backup and used ONLY when Effective Striking/Grappling is 100% equal for the round.