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The battle between David and Gamma already lasted for three minutes. And neither of them got the upper hand. The latter might have the advantage in terms of raw strength and powerful attacks, but the former had a solid foundation and multiple techniques and styles that he could switch to during the battle.
David seemed to be continuously absorbing all of the data that he was getting from his opponent and constantly adapting to it in response. His style and technique applications seemed to be evolving as the progress went on.
This ability from David was not an exceptional talent and was entirely different from Battle Genius Talent that Shin had. It was a systematic process where he studied his opponent thoroughly during the battle before adjusting his style accordingly.