The only way to know is to compare the reference weights. The definition of 1kg is that it is the mass of the international 1kg prototype, stored in Paris. It's quite a big problem that it, and the national references, seem to be gaining.
The article points out that all of the major Hollywood studios except Universal are backing Blu-ray; Universal is backing HD-DVD. It also notes that while one industry watcher believes the first format to have an installed base of two million homes will come out on top, there were millions of Betamax units already sold when VHS won out in the format wars of the 80's."The European Commission, the European Union's executive body, appears to be particularly interested in the activities of the Blu-ray group because of its dominance in Hollywood, according to people familiar with the situation. The commission is investigating whether improper tactics were used to suppress competition and persuade the studios to back their format.