Top Swing - The clamp mount of the derailleur is at the bottom, then the moving pivot is on the top, call Top Swing, like XTR M970 is top swing

Bottom Swing - The clamp mount of the derailleur is on the top, then the moving pivot is at the bottom, call Bottom Swing, like XTR M971 is Bottom Swing

Top Pull - The cable routing is from frame top tube to derailleur.

Bottom Pull - The cable routing is from under BB to the derailleur.

So don't confuse Swing & Pull.

Now all SHIMANO 2008 model : Deore, LX, XT & XTR Front derailleur is duall pull design (top & bottom pull both is compatiable). That's mean U no need to care cable routing which will fit. U only need to choose which clamp mounting (Top / Bottom swing) for your own bike

Because the moving pivot section is set at a higher position and combined with a shorter link, the rigidity is higher while quick and light shifting is possible for Top Swing