As to Martina's clay record, Chris is often given the benefit of the doubt (as well she should) that the late 70's brought a de-emphasization of the French and the European clay tour which was largely struggling with facilities and attendence. I have little doubt that Martina could've won multiple titles in Berlin and Rome had she tried more during her prime. I think her first trip to Berlin in the 80's wasn't until 1986. Rome wasn't until 1987. If its a hole in her record its her own fault. But her French record (2 titles, 4 r/u) suggests that Martina's clay court prowess was considerable.
For all of her strengths, Martina's mix of power, speed, and the grace of her sliding was tops for me in terms of movement on clay. Her 1984 demolition of Chris was sheer beauty.