I am a little taller than 5'11", with about a a 33.5" inseam measurement & looking to buy an older Bianchi 928 online. It is described as being a 57cm frame & the information given is:

The bike measures 55cm from the center of the BB to the top of the seat collar (C-T). The horizontal tube measurement is 56.5 cm center to center. The standover height is 31 inches measured 6 inches forward of the seat post.

My current bike is a "large" Cannondale Quick Speed 2 which has a TT length of 55.5 cm & seems about right for me. Obviously, these are pretty different bikes, but does the sizing of the Bianchi sound more or less appropriate for me? How do Bianchis generally size out?

Thanks!