Doing the same math for 1H weapons:
Without Improved Critical or other special feats:
Battleaxe/Flail/Warhammer: 59.5n + 10B
Scimitar/War Pick: 48.5n + 10B + 4.5t
Longsword: 53n + 11B
Bastard Sword: 65n + 11B
Battleaxe > Scimitar if 11n > 4.5t, which is always true
Longsword > Battleaxe if B > 6.5n, which may or may not be true.
Longsword > Scimitar if 4.5n+B > 4.5t, which is basically always true.
Bastard Sword is better than all other weapons by a bunch, though dwarven weapon training beats it for the battleaxe and warhammer. For T2 comparisons, we'll just use the bastard sword and no longsword entry.
With special feats, T2:
Battleaxe (Deadly Axe): 59.5n + 10B + 9
Flail (Sweeping Flail vs Shield): 70.5n + 12B
Warhammer (Hammer Rhythm, 17 Con): 59.5n + 10B + 30
Scimitar (Scimitar Dance, 17 Dex): 48.5n + 10B + 39
Battleaxe > Bastard Sword if 9 > 5.5n + B, which is grossly unlikely.
Flail > Bastard Sword if >50% of targets have shields, which is unlikely.
Warhammer > Bastard Sword if 30 > 5.5n + B, which is likely.
Scimitar > Bastard Sword if 39 > 16.5n + B, which is likely true for rangers, false for anyone else.
Warhammer > Scimitar if 11n > 9, which is always true.
With improved critical, T3:
Bastard Sword: 70.5n + 11B
Battleaxe (Deadly Axe): 65n + 10B + 27
Flail (Sweeping Flail vs Shield): 76n + 12B
Warhammer (Hammer Rhythm, 19 Con): 65n + 10B + 40
Scimitar (Scimitar Dance, 19 Dex): 53n + 10B + 67
Bastard Sword > Battleaxe if 5.5n + B > 27, which is likely.
Bastard Sword > Flail if <50% of targets have shields, which is likely.
Warhammer > Bastard Sword if 40 > 5.5n + B, which is likely.
Warhammer > Scimitar if 12n > 27, which is likely.
Scimitar > Bastard Sword if 16.5n + B < 67, which is iffy (probably true for a ranger, probably about equal for other classes).
Conclusions:
at T1, if you only spend 1 feat, scimitar and war pick suck, the rest are pretty balanced vs one another. If you spend 2 feats, go bastard sword and weapon spec unless you're a dwarf.
at T2, warhammer is the best if you're willing to buy a 17 con, otherwise go bastard sword or scimitar. Don't go battleaxe unless you're a dwarf and don't qualify for hammer rhythm. Don't go flail or war pick.
at T3, the situation is much the same.