Well - to put it as blankly as I can - if someone doesnt want to trade because of what is displayed by the Google toolbar, then they are just plain stupid - they obviously dont know the real value of trading links, and certainly have no idea what they are doing when it comes to SE's. The toolbar has been inaccurate for at least 6 months and only the fools and idiots that think that the toolbar PR is the ranking of a site - theyre probably not worth trading with anyway
Also that tool posted above (if Im seeing the results correctly - I cant see the actual php script) looks like its based on toolbar queries as well - and is pretty useless as a true pagerank tool