Or maybe you're getting more uTP peers in 2.0 because you're actually attempting outbound uTP and the protocol overhead associated with uTP accounts for the difference.
Availability is always number of complete copies (each seed counting as 1, each complete set of pieces among downloaders you're connected to counting as 1) So your 5 seeds + 20 downloaders may very well have 16 complete copies among themselves.
If you make a torrent of a folder, the torrent ends up in the parent folder of the particular folder you made the torrent of Make a torrent of: c:\users\harold\documents\bluetooth Torrent ends up in c:\users\harold\documents