That's enough proof that the standard Bijuu Damas are quite hypersonic.

I wasn't arguing that they aren't. :P

Was arguing that they are faster, as fast as the Juubi's :P.

I disagree. The Juubi is far more powerful than any of the Bijuu. Kakashi is greatly impressed with the distance it crossed and says how it is much greater than all the previous Bijuu Damas. Furthermore, Shikaku says how every city is within its range of fire, and Inoichi remarks how all the citizens in each of the nations are not safe from it (chapter 613). See, I'm not saying it is impossible for standard BDs to be as fast as Juubi's BDs, but we simply have no proof for that argument, and seeing it is called better than the standard BDs multiple times, it would be a bold assumption we should not make at whowouldwin.

It says that it is more powerful, and that it has a better range before detonating, but not that it is faster.

Not necessarily. Based on the size of the previous Juubi's Bijuu Dama, which dwarfed a dozen mountains, this distance right here is easily above 600 kilometers, meaning that if that entire scene took 40 seconds, the Bijuu Dama would be above Mach 40, which is not bad. This one BD in particular could have also been slower, since as Madara said, they did not have perfect control over the Juubi yet.

I mean, it wouldn't make sense. They were in the middle of the battlefield, and everyone there looked like they were just sitting around doing nothing instead of trying to deal with the Juubi, Madara and Obito imo. Them doing nothing for 40 seconds isn't likely.

Yes! I totally missed this feat. This is solid. Maybe almost as good as the lightning-timing feat.

Yeah, i don't get how people missed this. It was one of the best feats, gives the Bijuu's pretty high reactions.