The feats Cleave, Great Cleave both say you get -2 to AC when using them. Is that cumlitive? If I use Great Cleave would I get a -4 to AC?
Also the Cleave Through feat from the Advanced Race Guide. There is no -2 AC listed with the feat. Should there be because the other cleave feats have them?
no, its not. anything that builds off cleave uses cleave as its base. so you say " im cleaving" then you get to use all those awesome feats that add to cleave.
one exception to this is cleaving finish, it dosent say you need to use cleave to get the extra attacks.