Complex sentence: Critics such as James Randi, with whom she has had a long running feud, say that she is a cold reader whose readings are indistinguishable from those achieved by mentalists using cold and hot reading techniques.
Split into simpler sentences: Critics such as James Randi, with whom she has had a long running feud, say that she is a cold reader. Randi says that Browne's readings are indistinguishable from those achieved by mentalists using cold and hot reading techniques.