I really don't understand your question. Are you saying that if you pose two different figures in Poser and they are the same size, and then import them into Bryce one will be smaller than the other? Are you Exporting the models from Poser together or separately? And what file format are you exporting them to? I have done many multiple character exports from Poser and imported them into Bryce with no problem. I export them as .obj files.