IAEA is the nuclear industry's main lobby agency. Is like asking OPEC what do they they think about the Gulf oil spill. So no, coming with data provided by them is no better than what you see in the newspapers.
The data is what has been actually recorded by Tepco and others and is certainly reported in good detail without being fudged or sensationalised like the mainstream media is doing.
We know there IS radiation and we know that pretty much ANY radiation coming from any plant that has the words "disaster" "chernobyl" "meltdown" "breach" or any other range of descriptors is certainly BAD.
So, take-aways == radiation escapes, radiation bad, don't know truth == stay very far away.