There was a very detailed explanation of what stefan did on another site..
If i remember correctly he did the cut in himself and he also thinned out the unit especially in the front as well ass staggering it to achieve a very realistic look.
It was commented that the lace can be seen, but in all fairness this is with extreme close ups.
Keep in kind that with such an exposed hairline that sometimes no matter how meticulous the attachment or how great the lace is
You might get a hint of lace in pics from the flash, lighting etc that isn't actually visible in person.
And again, he created the graduation, maybe he over did it a little bit.but to truly judge it i think it would need to be seen in person and various lighting conditions