Everyone can make more moves. I usually see it like this, if I make a move, you can make a move. When you made a move that leaves me the option to make a new move as well.
With respect this is a terrible gambling way to approach fighting. It is like taking turns rolling a die, with everyone having a different number of sides depending on physical capability. A more intelligent approach is to impose upon the opponent, forcing them to react in a predictable way, and taking advantage of that reaction.
Can you not see the simple calculation being presented by LFJ in terms of tan blocking one hand and punching with the other (50:50, you both have one hand left), vs covering with the punch and punching angle every time it is made (ups the % in your favour)?