This photo displays the vectorscope in Ozone 5, which indicates that PIXL has Ozone. Another photo (https://www.facebook.com/photo.php?fbid=527130497368108&set=pb.102702486477580.-2207520000.1405543474.&type=3&theater) displays Insight, which is a separate plugin that comes with Ozone 5 Advanced, which implies that PIXL uses Ozone 5 Advancedmore
This is essential if you intend on doing your own mastering as it offers a limitless array of functionality, The only drawback is its extremely RAM intensive but that problem can be solved by rendering your project into a wav file after your mix down.
Just as the iZotope Ozone 4, this thing is a must-have for every producer here doing their mastering work theirselves. ALOT of options and possibilities to customize how iZotope should work with you and fulfill your needs.