In the BA cover he dirties up his voice but on the Bad English, he's reading from a music stand and doesn't try to sound like Waite at all. Doesn't sound like Perry either.
IMO, his natural delivery is most like Jimi Jamison which explains why his "Search Is Over" is so dead on.
Heaven
http://www.youtube.com/watch?v=Q1NoFk5sVVE&
WISYS
http://www.youtube.com/watch?v=HZn3tHFCEwo&
Search Is Over
http://www.youtube.com/watch?v=Hwbo5I_Sivk&