Japan will allow nude photo of Spears after all?

From the BBC News:

Tokyo 'will allow' nude Spears ad

The Spears photo was deemed "too stimulating" for Japan

A poster showing singer Britney Spears nude and pregnant will be displayed on Tokyo's subway system, despite an earlier decision to ban the advert.

Officials initially claimed the photo, which appears on the cover of Harper's Bazaar magazine, was "overly stimulating" for public display.
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I have a strange reaction to this article having grown up in Japan. Pornography is everywhere. We found it in parks, we saw people looking at it on the trains, we saw it in 7 elevens, on TV, in newspapers, sports magazines, etc. It's inescapable. But stigma surrounding the viewing of pornography is minimal in Japan. For example, its not unusual to see men scrolling through porn magazines in the magazine isle at a convinient store. In America, the hard core magazines are wrapped in plastic, like, you have to buy it if you want to look at it, and you take it home. You don't look at it in the store in broad daylight.

The funny thing about the Spears photo is that the Japanese subway officials originally said it was "too stimulating" for the train. Spears is nude, but the picture hides her pretty well. Compared to what I've seen on advertisements on trains in Japan that are posted everywhere you look, on the walls, hanging from the ceilings, I fail to understand how this one photography of Britney could possibly have aroused any controversy.