If the A5 4-cyl Accord scores an 8.3 second 0-60 time, then I would assume that the A5 TSX is somewhere in the 7.7-7.9 range.
And although I like the Passat and Audi, you'll probably get more for your $$ from Honda. The Passat can get pretty pricey when you start adding options that you can get standard on both the Accord and TSX.
As for luxury... the TSX and Accord have similar interiors... though the TSX has higher quality leather and a few nicer details/features.
Performance wise, The TSX is more nimble than the Accord.