I would think the ones letting off both explosions would be the cuckoo ones, but then that is an small insight into your world rather than mine. I'm sure you would agree Syrian Rebels do not have the capability of precision bombing with the nex-gen bombs, then again there is that filter you apply to most real things so you can fit in into your world.
You may doubt me but Russia is saying the Gov of Syria did not do this deed, that leaves you know who, the destroyer of towers, ... wait, that was the bas side of that group and Syria only has the good side of that group, free now their task in Libya has been paid for in gold. Real shock to the Lybians who did the same get nada, welcome to freedom, get it while you can. Damn, gone already.
Al-Qaida and its associates are behind the recent bomb attacks in Syria, the Russian foreign ministry said Monday.
"For us it is absolutely clear that terrorist groups are behind this -- al-Qaida and those groups that work with al-Qaida," Deputy Foreign Minister Gennady Gatilov told reporters.
Twin suicide bombings in Damascus last week killed 55 people and wounded 372, raising fears that extremist elements were taking advantage of the deadlock in Syria to stoke the unrest.
Russia Says Qaida behind Syria Attacks
Lets do a theory that the 'all knowing A-Q gang' have access to secret stuff because they are just that good. The UN sends in a forensic team to do a fine clean-up of the area so a realistic model can be built, Realistic down to a car with it's hood blown upwards and the engine gone and the rest of the vehicle is intact still. That car was not the one holding any bomb, Not so odd that some 9/11 cars showed similar damage if heat rather than a concussion wave was the means of the destruction (given that creating that heat will create an explosion that is not weak either)
It should be possible to do a software analysis of both craters to determine what forces could leave such damage. Visually they look quite similar, more power used in one is the only difference.