What is the difference between RFT and QTP ??

1.QTP uses lite weight scripting language. RFT uses powerful language Java.
2.QTP - started by Mercury and taken over by HP.
RFT - started by Rational and taken over by IBM.
3.QTP has only one platform to develop scripts only in Vb Script. RFT has two platforms - Visual Studio and Eclipse to develop scripts in VB and Java respectively.
4.Action concept feature is available in QTP but RFT does not support action concept.
5.QTP is very user friendly compared to rft.
6.QTP has descriptive programming feature. where as it is difficult to develop program in RFT.