Should i put Porygon Z into my team?
Whats so good about him anyway?
The thing I hate about this place is by the time you get to something you want to answer, about 5 people have beaten you to it. :)
Anyway, as far as Standards go, Porygon-Z is pretty much top rung as a special sweeper duking it out with Alakazam. They have equal SP. Atk at base 135, Alakazam has by far superior speed (120>90) but has an arguably worse moveset and trait. trait wise, Porygon Z has Upgrade and Adaptibility while Alakazam has Syncronize. As long as you are aware of Syncronize, it isn't much of a problem. As a special sweeper, Alakazam does benefit by Syncronize because speed and special attack is all Alakazam has so a thunder wave would be devastating. However, unless you're a natural cure blissry, you may want to think twice before using it.
Porygon-Z however, with adaptability can get a 2x STAB boost or with upgrade pretty much have a 50/50 chance at getting it's attack or sp. atk raised by 1.5x. both raise its sweeping abilities, especially if you use upgrade wisely.
P-Z also has a moveset advantage. It has access to tri attack, Nasty Plot, the ever popular Bolt-Beam combo, and other moves. Plus with Adaptability-Hyper Beam, Porygon-Z can potentially OHKO Blissey, who tries to counter a ready to sweep Porygon-Z. A Nasty Plot boosted Ti Attack can do the same thing.
