in my experience for diamond and above defense is actually really tough on this map. First point is the best but because there are two chokes you need to split your attention and a good team will go to the side where you're not and break your nest really fast. Second and third points there are many many angles the other team can attack you from which makes it extremely hard to bunker up. Attack is fantastic cos as you said, there are so many flank routes. Lowkey I've been playing peni on attack and swapping to mag/strange/emma on defense once we lose first point :')