The article is pretty clear that on the small unit and soldier level the Arab forces are less effective, too. Specialists horde information, soldiers don't train for multiple roles, junior officers mistreat their soldiers, no one shows initiative, etc. There are good reasons for all of this -- it's not an Arab character defect, but a rational response to soldiers' circumstances -- but the author states quite explicitly that an Israeli tank crew can better absorb casualties than an Arab tank crew can because the Israelis are encouraged to share information and train for multiple tasks.