I'm very, very confused by the whole Weapon Whatever program...
First you had Weapon X (in which the X was originally intended for the entire program or at least that's what I gathered) and the program included Sabretooth, Maverick, Silverfox, etc (all under the Weapon X program)...Later we're lead to believe that it referred to Logan himself and that he is Letter X in a long line of Weapon letters...Later we're told it's not the letter X, but the number ten and there is a Weapon 11, 12, 13, etc...etc...A bit later, a second Weapon X program produces Deadpool, Copycat, Weapon X II/Garrison Kane, Slayback, Sluggo, Etc....Then the new comic series Weapon Xcomes (the third Weapon X program we know of) out and it's again a whole program called Weapon X and there are many superhuman (mutant and otherwise) agents within it's structure.
The whole thing is mind-numbing (as PWalk stated)...I actually get dizzy whenever somebody brings it up and tries to fit another character into it.
Dana