I feel good after reading that chart for my old Australian Ricardo Elite. Made from Tange 5 Seamless PG tubing, the 57cm frame weighed in at 2220g, lighter than the chart. The forls where a respectable 700g on the nose. As for the Tange Infinty tubed frame, I think you will find, as stated by others, that the weight is in the components and the frame itself is worthy of chucking on some decent components to lighten it up.