To compare both products to understand what's different in both, take a look at the online comparison and read the post about Data Dynamics Reports advanced data visualization features.
A .NET chart is a visual representation of quantitative relational data that can be used in ActiveReports for.NET to enhance information analysis and interpretation. .NET Charts in ActiveReports are composed of elements, such as Axes, Series, Points, and Legends that bring meaning to the depicted information.
The following image illustrates the elements that make up the ActiveReports .NET Chart control.

A chart series is the key to showing a chart. All data is plotted in a chart as a series and all charts contain at least one series. The bars in the image below depict two series in a simple bar chart.

The .NET chart control features an easy-to-use wizard. The chart wizard automatically runs when you first add a .NET chart control to a report. If you prefer not to have the wizard run automatically, deselect the Auto Run Wizard checkbox at the bottom of the wizard.

In the next posting (that will be the first of 3 such postings), we will take a look at common chart types supported in ActiveReports and Data Data Dynamics Reports.