This is a tough one....
Pros..... Not Many Really... The Predators looked Decent but this is something that is not very hard to do as its not much of a Man in a suit but more a Man in a Mask, so the LV-223 Engineers in Prometheus were harder to make. This however is a benefit to the Predators as when Masked its hard to mess these guys up.
The Pred-Alien was interesting and also a good concept.
The Xenomorphs in some shots they did the job fine... you could tell the Quality was not as good as AVP and other Alien Franchise though... but in some shots they had the lower budget man in a suit look to them where they did come across a bit more of a Pumpkin Head with a Xenomorph Head look to them. This was only as far as the Men-In-Suits Action scenes.
Action Scenes were ok for a Basic Popcorn Action.
Special Effects were ok but not up to the Standard at times you would expect from a Franchise that encompasses TWO iconic Franchises.
The CONS.... Basically Everything else.
The Plot was not so good... but this was also a sequel to the Flawed First Movie Plot.. (being set in the 21st Century)
The Execution was rather poor with sub standard Acting and Writing... This movie LOOKED and was Written/Acted like a Lowe Budget Straight to Cable Flick.... the Sharknados, Alien Hunter and the like... so those made by SyFy Network HERE
In fact a number of them were Better... so AVPR looked like a SyFy Network attempt at a AVP... where Budget for Effects was increased but sadly the Acting/Plot and Writing was at Sharknado levels lol
AVPR for me was a 3.5/10 Movie. (Disappointing)
It gets better than a 3 from me just only because it does have a few redeemable Qualities and ideas. I do think maybe 3.5/10 is also at times a bit generous.
AVP in comparison gets a 5/10 (Average)