Warpsharp Explanation

[maki]

Can someone explain to me how warpsharp works and if there's anything else that can thin black likes without warping the image so much?
Here's a an exaple of the warping caused by warpsharp:

Original image:
http://img268.imageshack.us/img268/8043/haruhioriginal.th.png (http://img268.imageshack.us/i/haruhioriginal.png/)

Warpsharp Defaults:
http://img816.imageshack.us/img816/152/haruhioriginalwarpsharp.th.png (http://img816.imageshack.us/i/haruhioriginalwarpsharp.png/)
Script:

toonlite(0.05)
WarpSharp()
LimitedSharpenFaster(Lmode=1, edgemode=1, strength=200)
Dehalo_alpha()
a= last
b=a.dfttest(sigma=0.25, tbsize=3)
SeeSaw(a,b, NRlimit=2, NRlimit2 =1, Slimit=1, SdampHi=0)
trim(11511,12483)
LanczosResize(1280,720) # Lanczos (Sharp)
ConvertToYV12()


Other warpshap settings:
http://img853.imageshack.us/img853/152/haruhioriginalwarpsharp.th.png (http://img853.imageshack.us/i/haruhioriginalwarpsharp.png/)


toonlite(0.05)
WarpSharp(96, 10, 128, -0.6)
LimitedSharpenFaster(Lmode=1, edgemode=1, strength=200)
Dehalo_alpha()
a= last
b=a.dfttest(sigma=0.25, tbsize=3)
SeeSaw(a,b, NRlimit=2, NRlimit2 =1, Slimit=1, SdampHi=0)
trim(11511,12483)
LanczosResize(1280,720) # Lanczos (Sharp)
ConvertToYV12()


I originally used the settings above but I was told that those settings destroyed the image too much, as well as the defaults. I want to stay true
to the sources's video, and all I want to do is thin the lines so it doesn't take away from the overall of the video. Other recommended plugins are welcomed.

Also if someone could comment on the sharpening, and noise of the image of the video it would be a great help, since this is my first encode, I want to learn
more about what not to do when encoding.