The Fukushima disaster is already as bad as Chernobyl according to the International Atomic Energy Association's scale
That is quite a logical leap based solely on the INES rating. Fukushima is in the same category as Chernobyl, but this is also the highest category there is, and Chernobyl was past the boundary by a huge margin.
For example, the criteria for the total release of iodine-131 in a level 7 accident is "tens of thousands of TBq". Chernobyl released 1.8 million TBq. Fukushima has released about 370,000 TBq so far.
Chernobyl had killed 31 people by this point while Fukushima has had negligible health effects so far due to much better emergency response. The INES rating does not account for this, only for the amount of material released.