That rumour can't possibly be true; Tabuu's attacks encompass the entire stage, whether it's the lance or the exploding clones; his seeking attacks (like the brackets and chain of light) can hit you anywhere on the stage too. So no, sorry, that's false.
Also, would you mind not posting in large letters AND bold? Kills the eyes; it can annoy people. Just a little friendly advice. :thumbsup:
I used Snake, Diddy Kong, Sonic, Pokemon Trainer, and Mario. Thought Ivysaur was good since his standard B attack is just constantly shooting upward, put out a lot of damage, you just have to wait for him to stop teleporting then start shooting at him.