On fire!
I’ve read that review you’re talking about, they were not impressed at all. 
I also found an article/review in the Village Voice from February 24, 1975. Progressive Soul: Where Were You? by Vernon Gibbs. This is what they said about the p:
Funkadelic opened with the rabid squeal of their classic “Maggot Brain,” a ghost organ kicked into a moaning guitar solo, during which George Clinton emerged from a coffin dressed in a cape and a fencing mask. The Parliaments joined the act for other classics: “Goose,” “I Call My Baby Pussy,” and “Red Hot Mama,” Funkadelic-Parliament is the bizarro group, the group that taught Alice Cooper their act.
Damn, to see GC emerge from a coffin… “the bizarro group” 
. Here’s the page from the newspaper.
