<A> incrase level stats by 2.
<B> incrase level stats by 4.
<C> incrase level stats by 7.
<D> incrase level stats by 10.
<E> incrase level stats by 14.
<F> incrase level stats by 18.

example:
Player1 - level 95
<A>Player2 - level 95(+1)

duel:
Player1 vs <A>Player1
more chances got <A>Player1