You've heard the saying that you can't compare apples to oranges -- well with envisage you can!
Envisage Comparison Graphs now have a second vertical axis.
You can choose to scale the graph to either the left or right vertical axis, as you can see below.
The Comparison Graph setting allows you to add a second vertical axis (Y axis) and define the color of each graph.
Add second Y axis, choose Yes
Choose Left Subgraph
Choose Right Subgraph
Click Save Changes