Complex sentence: One feature is the focus on a timing-based grappling system that encourages the use of complex strategy built on working up to using increasingly powerful moves on your opponent, as opposed to the button-mashing tactics with which most 2D wrestling gamers are familiar.
Split into simpler sentences: One feature is the focus on a timing-based grappling system, which encourages the use of complex strategy, built on working up to using increasingly powerful moves on your opponent. The timing-based system stands in contrast to the button-mashing tactics with which most 2D wrestling gamers are familiar.