Boxer-Dudley match-up = 6:4 in Boxer's favor in my opinion.
Reason :
Cross counter only counters mid and high, and loses to lows/armor breakers/throw/super/Ultras.
ex.mgb punishable on reaction with throw/jab, punishable on block with U1/U2/Super/cr.mp/cr.lp,st.lp.
all but light mgb (2 hits) are punishable on block with cr.lp
Ducking followups can be jab reversalled (if in range).
non ex thunderbolts can crossup, it's not an OH, punishable by anything on block, causes decent chip damage
all but light SSB can be st.lp/cr.lp reversalled.
Ultra options:
His U1 is fast (6 frames), it'll whiff punish (and reaction punish).
U2 has a long startup and big hitbox, ex.hb always wins, all non ex.hb's lose point blank, headbutts will trade from a distance but recover in time to juggle U1/Super.
U2 can also be used as an anti-air.
U2 can be jumped over from neutral, or punished with a jump back heavy.