Actually, mine does comapre the systems linguistically. MCE's are not true languages nor are they true pidgins. ASL is a true and naturally evolving laguistic system based on visual/spatial processing. Adding signs from a visual spatially processed language to a linear syntax creates difficulties in understanding concept. MCE's are cumbersome,and attempt to commmunicate an oral syntax to a visual spatial language. They are really unneccesary, as ASL does this inherently. Therefore, MCE's are simply differnent versoins of English, and ar not languages by their own right. Just as written English is another form of spoken English made visable, so are MCE's. While perhaps useful for some commmunication purposes, they are really not very useful when language acquisition is the issue.