1. Not all mac apps can be copied by dragging folders out of the applications folder.
2. There are many many different backup solutions for windows -- many of which are far better than Time Machine for certain use cases (say, managing backups for several thousand machines). You probably want to look at http://www.codinghorror.com/blog/2008/01/whats-your-backup-s... for a simple solution.
Rather than suggesting I google something (what, "windows backup software"? and spend several days becoming familiar with the myriad solutions?) since you seem to be so informed on similarly performing backup software as Time Machine and this is a site meant to have civil discussions, perhaps you can recommend a Windows backup solution that can restore all your apps as easily as Time Machine can. Or, for that matter, how I can network two Windows machines together and copy all the apps from one machine to the other like I can on a Mac by copying the contents of the Applications folder.