http://i.imgur.com/oLHiQgR.jpg
so when I'm watching a movie, I will switch to Windows and play it on MPC. For everything else VLC is fine. Annoying, I've tried filters and other fixes, but nothing worked.
Media Player Classic uses codec decoders you have installed on your PC, VLC ships with everything it needs to play your videos. In other words, you should not be comparing VLC to MPC, but rather VLC's underlying codec library (from ffmpeg, I believe) to the active codec decoder being used on your Windows machine.
For example, I too use MPC on Windows to get better video - but that's because I have CoreAVC installed and MPC uses it to play h264 content. CoreAVC blows everything else out of the water in terms of performance and quality.
What codec are you using on Windows w/ MPC?
The washed out colour in that screenshot can probably be fixed by changing the video output method (to OpenGL/Direct2D/Direct3D) or changing the default luma range in the graphics card settings from 16-235 to 0-255.
The differences you have captured here indicate that at least one of them is applying non-standard filters of some sort. Perhaps it's just a matter of the right settings (though I cannot offer help in determining what they are)