Pakistan V England - 4th test match at Oval

Re: Pakistan V England - 4th test match at Oval

do you fully understand the LBW law under DRSW? and if you do, do you actually believe that law was not fully followed in balance case and he shd have been given out? or is it your feeling that a whitiee got the upper hand in that decision?

kindly explain, if you dont mind. thx