Pretending pivx and ALL other coins do not have launch and/or distribution issues is laughable. Just read the first 10-15 pages of the pivx ANN thread and you will see they had a lot of the same issues as Dash and more.
70% of the pivx tokens were mined in the first 100 days. I have seen it claimed that 80% of the Dash tokens were mined in the first 100 days but have not done the math to verify that. Either way, in the end these issues will only affect about 10% of the total coin supply of both coins. This is way better than half the coins in the top 20 that were premined to the extent of 10-20% that only went to one person or very few. 100’s if not 1000’s of people were mining Dash from deep technical analysis that has been done.
As pointed out in the pivx/darknet ANN thread pivx was heavily mined by people that spent lots of money on rented hash or botnets and blew all the little guys out of the water from the jump.
The other difference is that the Dash instamine/fastmine was accidental (some coins had a on purpose instamine as part of their distribution method) from a bug in the litecoin code it was originally forked from.
In pivx, it was “planned” to have 70% mined in the first 100 days and guys spent a lot of money buying up hashing power to make sure they got a ton of it. Another issue pivx has is that those same guys immediately set up masternodes and got even more coins right from the start, centralizing the problem even more, Dash did not have that issue as they “invented masternodes” later, you're welcome. I have not looked too deep into the centralization this caused in pivx but it was more than with Dash from my limited research and more thorough research of others.

The Dash instamine is also very well publicized and not hidden like the pivx issues. There is also misleading info put out on the pivx info graph as pointed out by thedashmeister on youtube. Also, pivx's supposedly better features over Dash are not even implemented but are often talked about as if they are. They also have issues/bugs with their current governance voting system that have been going on for a long long time. So it would probably be best to see if they can ever figure that out before promising other radical changes to the code that may or may not even work.

TLDR, If you live in a glass house don't throw stones at the throne.