You need a 4.0 for business schools because anything less than a 4.0 shows you didn't write your essays.
If the program you're applying to has no essays - then you're fine.
This guy can absolutely get 2.5 and a 750 because he gamed it. Didn't treat the AWA seriously and probably just really did it quickly so he was fresh for the part that counted. I did the GMAT 3 times. In the first two times, I got an AWA of 5.5 and 600's score. I thought about gaming it too and ignoring the AWA the 3rd time I did it and jump straight to the actual GMAT. I didn't, but point is, for people who have done the GMAT once and got a high AWA, why not just skip it and go straight to the test? Then you can argue, well my actual AWA when I do it properly is 5.5. I just didn't bother the second or third time...
The counter argument from B-School is well, your 750 isn't really a 750 then because you didn't do thr AWA i.e. you didn't expend mental energy before hand. So it's unfair. That's why the GMAT order is screwd. They should make you do AWA last to prevent this type of gaming.