Does Perfect Audience support such testing feature natively? Would be fantastic if I could do that without any configuration on my end.

Not currently but we're working on it! Drop us a line at [email protected]. I can say for certain that our support team would love to "roll" you away from our distinguished competitor.

Thanks. We(Plivo) actually tried PA out for the dev-targeting display ad option. (not retargeting). We didn't feel we had the kind of ROI we wanted at that time.

Incidentally, would the reports from Conversion Explorer be more granular than the conversion reports at Adroll? (with Adroll, it's not possible to see the "who" part, but when and where, yes)

You're absolutely right.