Just like with MTBs different manufacturers measure their frames differently. Even before there were compact frames there were those who measured centre to centre and those who measured centre to top. And since compacts came along there are even more ways to measure a frame. Let's not even get started on the XS,S,M,L,XL nonsense.
It's the TT or VTT length that matters so ignore the classic table based on height or inside leg. if you've got short legs for your height you'll probably need a larger frame than your height would suggest because you'll have a longer torso. And a rider who is all leg will need a smaller frame than his inside leg would suggest because they will have a short torso for their leg length. It must be a bitch for those circus chimpanzees to choose the right frame.
And don't take as gospel the advice of somebody who is a similar height to you. It's amazing how many people ride the wrong size bike.