iTunes Match uses a combination of the tag data, song length, and audio fingerprint to try to match the track to an existing song in the Store.
Because of the audio analysis, it may get around incorrect tags in some cases.
It is not 100% correct. Match users are full of stories where it mistakes Clean vs Explicit versions, live vs studio versions, Spanish vs English versions, or it just plain messes up.
As Apple recommends, make a local copy on an external disk drive so that you will have a valid copy of the original song.
I know this is old, and not sure if you have this one solved, but I wanted to give my experience with adding unusual song named items. I have found that you can match and it will upload since it won't "match". But, if you go to the iTunes store and look at exactly how they do Artist, Album name, and track name, once you sync again it will match and also grab album artwork, etc.
I have had a few times where I put "This & That" and found that on the store it was "This and That". Once I changed the & to and, it worked just fine and everything synchronized. But I have found if you can do Artist Name, Album Name, and Track Name they tend to match the fastest.