I skimmed though the eValid forum and didn't find this question has been addressed before:
Does eValid have a "correlation capability" like LoadRunner?
No, not really.
The architecture of eValid makes having that kind of "after the fact add on" form of data synchronization unnecessary.
Features like eValid's adaptive playback and the ability to synchronize complex AJAX playbacks without relying on fixed (and sure to be exceeded) wait times make it unnecessary to have the extra steps that are needed to establish the LoadRunnter-like "correlations."
What is simpler is better, and in eValid's case the simplicity of actually using a browser is clearly better.
In other words, a real browser is better than an appoximation any day!