Please let me know the difference between Baan IVc4, Baan 5.0b and SSA ERP LN 6.1 technically as well as functionally

Here a link to a link to a link on this topic :)
http://www.baanboard.com/baanboard/showthread.php?t=27383

Is very complex to resume what you´re asking, you should be more specific, anyways here is a usefull document.

Regards