SSBB with characters: [u'Meta Knight', u'Toon Link']
That's the simple explanation; the longer one is worth posting. Toon Link generally thrives off using his projectiles to limit the options of his opponents, for one wrong move on their part means the boy will deal them some meaty combos. The problem is, Meta Knight's abundance of options make his approach difficult to predict, which becomes an enormous problem for TL at mid-range. MK's Galaxia consistently outranges TL's Master Sword, so TL will have ...

SSBB with characters: [u'Bowser', u'Sheik']
Needles and ftilt are 2 very important moves for Sheik to have here. Up close, her poor anti-shield game leaves her at the mercy of Bowser's jab, grab, and Whirling Fortress. Aside from Bowser's slow movement meaning Sheik gets lots of time to charge those, there are just a lot of situations she can throw them out. Is he trying to rush her down? Is he about to land to try resetting the neutral? Is ...

SSBB with characters: [u'Fox', u'Marth']
It's worth mentioning that Marth's forward throw can chain grab Fox in this game; he can get followups like fair, tipper dair, or tipper fsmash from one. That adds to Marth's advantage in damage racking here.