Yes, CloneDVD has a greater ability to fix (as it is ripping) purposely mis-structured DVD originals than the present version of FixVTS that is included in AnyDVD.
I think the problem is that FixVTS is a great tool but it is designed to fix structure protections statically and it is difficult to implement it's magic into a program that wants to "on-the-fly-fix" errors during the active ripping process.
Whisperer