The chance that competent military minds, which the perpetrators of this bombing almost certainly were, could learn anything of consequence from reading anything posted here is simply too small to be measured.
I'd question the competence - the method/target has been obvious for a long time - they appear to have targeted the arrivals hall rather than the departures area - typically there would be more people in a condensed area in the departures/security screening area. It would suggest that they were targetting a particular person/group rather than a random attack.