I have a question regarding Fusion and Evolution Z, if you have a team made up by Goku Super Saiyan 4 with an "Attack up 3" equipped and Vegeta Super Saiyan 4 with a "Defense up 3" and during battle you fuse them and obtain Super Gogeta as your character, what status will this Super Gogeta have? The ones from the character who used his 5 blast stock gauges to fuse?

pretty much....I really don't know,but I'm pretty sure it is.

If your SS4 Goku has Attack + 3 and your SS4 Vegeta has defense + 3 then your Gogeta will have Attack + 3 and defense + 3

You will gain the stats of whoever initiated the fusion. So lets say goku does it, your gogeta will have gokus stats. Thats what i think anyway, seeing as both goku and vegeta have gogeta in their transformation list, and fusion (game wise) is just a transformation with an extended cutscene and i doubt it literally fuses your characters abilities.

So the status of the character who uses his blast stock gauges to fuse, will be the one of the resulting fusion character.

Thanks for answering guys.

It DOES fuse your evolution Z items. If you don't believe me add Kiss of 18 to Vegeta and use Goku to initiate the fusion. Gogeta will be able to perform 3 vanishing attacks and Dragon rushes out of max power.

Hmm... It appears I better try this out for myself when I have some time.
If the evolution Z items do fuse, then it makes things more interesting, at least there is a benefit if you fuse your characters during battle, rather than simply selecting the Fusion Character.

heres the deal. if you are playing as goku with +3 attk, and start the match AS gogeta, then gogeta only has goku's stats. But if you are Goku with +3 attk and you fuse with Vegeta +3 def AFTER the match starts, you'll have both attributes.

this method of "compounding" stat attributes works with things like HP. Example- lets say both goku and vegeta have king kais training (+20,000hp) and you fuse after the fight starts; individually they have about 60,000hp. after fusing gogeta/vegito should have 120,000hp! try it out. i think the game makes the hp cap out at 100,000hp though.