I thought Peter Gabriel was a bit, as dyza put it, bizzare! And I saw nothing wrong with Phil's writing skills, either. Though, even if Phil's lacking in good lyrics, he's had some songs with a good beat, which probably made up for his writing.
I'm more familiar with the Phil Collins "after Genesis life" than when he was in Genesis.
Wasn't there one more member of Genesis that made his own group...was it "Mike and the Mechanics"?