@Override
    public boolean equals(Object obj) {
        if (obj == null) return false;
        if (getClass() != obj.getClass()) return false;
        
        final Stat other = (Stat) obj;
        if (!this.get(VALUES.orn).equals(other.get(VALUES.orn))) return false;
        if (!this.get(VALUES.ocn).equals(other.get(VALUES.ocn))) return false;
        
        return true;
    }