Maybe Canada's the only one with a bidding process stringent enough to produce accurate bids? True nuclear costs tend to be buried in a variety of ways: not paying insurance (ignoring potential cleanup costs), hidden amongst the total energy budget, ignoring cost overruns, etc. I don't know that that's the case, but I put more stock in a process that shows an inkling of skepticism than one that seems to be pushed through enthousiastically by the government of the nation/region concerned. And especially not estimates from China, which has a notoriously terrible attitude towards safety in general.