There is no doubt that Aeon has better privacy technology than Dashpay.
However I think it will take some time (probably over a year) for the AEON and DASH market caps to reach parity for three reasons:
1. Aeon is not very well known yet
2. Aeon still has a low network hashrate and therefore is potentially susceptible to a 51% attack
3. While HYIPs generally will ultimately crash and burn, they can in some cases last a very long time.