Ahh, I get where you're getting at now. I don't think so though, but having troubles putting into words why.

If you're trying to analyze those spots, I'd just use an overall graph like the 2nd one as your baseline, and then compare more finely grained graphs to it, rather than to 0.

Like now you filter where you c/c flop without a set. Then you filter for ones where you raise turn, then when you c/c turn, etc.

I generally find it easier just to use the reports screen for this kind of thing though. What do you get out of the graph, just the showdown/non-showdown lines? The reports screen lets you see bb/100 winrates which is pretty handy for this comparison stuff.