Shipping lots of something doesn't mean it's in widespread use. I'm aware of several service providers using 3Par who no doubt bought oodles of the stuff. This means there could be 30 customers each with a large install - statistics lie all the time and shipping reports even more so. I am indeed talking about enterprise customers with proper data centres, and almost none of them have 3Par. Don't feel bad though, only one of them had Compellent and that was being replaced so 3Par definitely seems more popular than that.
Please bear in mind that because you work for HPE you will tend to see more customers with 3Par than us vendor neutral bods who see a cross section of SAN customers from various verticals, and as I said it's very rare to see a 3Par in the wild.