There isn't more ammo, they're actual friends one just had a disagreement with the music and became a radio critic. People only want to see Budden go at Eminem because they feel Budden is a more worthwhile lyricist. Eminem is a fan of slaughterhouse and as a group they're his artists.
It doesn't make sense long-term, for Em to attack Joe.
I dont think they are friends though, yeah Em likes Slaughterhouse thats why he signed them, but clearly to me Joe and Em dont get on now... Why not battle??? I dont think they have 'beef' but a traditional battle would be great for the 'sport' of hip hop... We have too many street beefs that spill onto wax, it would be dope to have two MC's battle in the actual sport of MC'ing...