A maxed (level 30) UC+ with another maxed UC+ will get you better stats. (unless you want to push the limits, and fuse a maxed UC+ with a maxed UC++ to give yourself an even stronger UC++.
When you fuse, the fighter on the left gains 20% of the fighter on the rights stats, and goes up another +, and back to level 1 to be leveled up to 30 again. (or 40 for R, 50 for SR, and 60 for UR)
I posted a...very longwinded guide about this....
You might want to take a look at the Game Strategies page, CWP has posted a few good guides there. =]
is Fixed, you only have 3 Fusions in a row now, this expoid is Closed.
8 Maxed Fighter, maxed at every new Fusion is now the Maximum