WebSlingPlayer picture quality in regular SlingPlayer

WebSlingPlayer renders much smoother pictures than the regular SlingPlayer.  The difference is particularly apparent for sharp features as shown below (click on the image to see the pixel-by-pixel image).

I tried copying some files from the WebSlingPlayer program directory to the SlingPlayer directory to see if it is possible to have the WebSlingPlayer picture quality in the regular SlingPlayer since I do not like the WebSlingPlayer.  It turned out that copying SBDS.ax and H264DecoderDLL.ax works.  Here are the versions of the players I tried:

SlingPlayer: 2.0.4.522
WebSlingPlayer (IE8): 1.4.0.111
OS: Windows 7 Professional

I tried the same with my netbook running Windows XP, but the method above didn't work for some reasons.