Z/X: Ignition

Similarities: Both involves creatures from another world to cause chaos in man's world. Both involves a group of individuals who control such other worldly creatures to fight their own kind. Both also has that gov't conspiracy thing going on. Dissimilarities: In one anime a person may have 2 or more other worldly creature in his disposal, while in the other anime.........we're yet to find out. People in control of their other worldly creatures uses cellphones to control them, while in the other anime they have special cards and sometime their pet may question their master's intention. 

- A Fantasy world that invaded the Earth. - Military vs so-called Monster 

They have similar content, though the genres are different. It features a main character who is a card wielding user, and summons their Z/X or dolls to fight off other users. Once summon, they are either in a group, or singles, helping and protecting their card users. Fantasista Doll is a lighthearted show, where they uses dolls as fighting combatants and fight as a group. Z/X is somewhat dark, when a dimension is invading Earth and uses Z/X as their summons. 

Male MC (human) forming a contract with the female MC (non-human), they fight along side to protect one another and the friends they made along the way. 

The concept is the same summoner-summoned relationship where the male MC doesnt know much about the new world he has stepped in. Both male MC and his summon(girl) fight against other summoners for their own reasons, but they also gain some friend(s)/companion(s) along the way. 

Both anime originate from a card game. The concept is the same summoner-summoned relationship where the male MC doesnt know much about the new world he has stepped in. Both male MC and his summon(girl) fight against other summoners for their own reasons, but they also gain some friends/companions along the way. 

Both are centered around card games and cute girls, although Weiß Survive has more comedy. 

In both anime, Earth is terrorized by creatures from another dimension; the Nova in Freezing, and the Z/X in Z/X: Ignition. In Freezing, human males must pair up with females known as Pandora (who are humans genetically modified using Nova DNA) In Z/X, humans must pair up with other Z/X; of which most are humanoids. Also, the final enemy in Z/X, Audium, looks very similar to the Nova from Freezing. And for most part of both anime; the characters prefer to fight amongst each other; while only during the last few episodes, the anime focus on the real threats. The major difference is that Freezing is extremely ecchi and has a lot of nudity.  read more 

Cardfight vanguard has regular people just playing cards and aiming to being stronger. This escalates and they are forced into fights to save the world with their cards. Z/X is more serious in nature with the world at stake with the wars between the different color factions. They both have tcgs based of the anime though Z/X is still only in Japanese format. 

Both have the same feeling of a city over run by a large massive supernatural sphere where anonymous large demons/human beasts invade cities and cause destruction. Coincidentally, the same male seiyuu plays the main character (Hiro Shimono) in each series.  

Human must team up with their partner(Z/X) in order to save the world from destruction. Both series involve six other faction/races which are defined by their color. They choose their owner and battle each other. Based on a card game. While Bakugan is known worldwide , Z/X is new and just beginning.  

The main character makes a contract with a powerful spirit/god. He joins a team to face monsters or other people who have said power. An anime based on a trading card game. 

Humans must pair up with another being of mythical proportions with supernatural abilities to kill or defeat similar adversaries, fighting for survival, and ambition. The protagonists are also unwittingly thrown into the fray by chance, but end up using the opportunity to defend what they believe in, particularly the people close to them. Some characters might borrow their name from famous literary works, but may have their genders swapped (mainly male to female). While Z/X: Ignition is more of an apocalypse on a global scale, Fate/Stay Night is a small secret "war" within a single city, with only a handful of parties fighting one another. Despite that, Z/X: Ignition seems to only focus on one particular city with also a handful of characters as well. read more