For the record, here are the changes I found for both Gladiators:
BRUTE
Level 1 Offense #5 went from move - 2 (ag) to move - 2
Level 1 Offense #6 went from move - 3 (ag) to move - 3 (pw)
Level 2 Offense #1 went from move - 2 (ag) to move - 2
Level 2 Defense #5 went from hurt - 2 to dazed - 1
Cage pin went from 5 to 4
MASSACRE
Level 1 Offense #3 went from move - 2 to move - 2 (pw)
Level 1 Offense #5 went from move - 2 (pw) to into the ropes
Level 1 Offense #6 went from into the ropes to move - 3 (ch E)
Level 1 Defense #1 went from hurt - 2 to MASSACRE - 2
Level 1 Defense #3 went from dazed - 1 to MASSACRE - 1
Level 2 Offense #4 went from move - 2 (ch C) to move - 3
Level 3 Defense #5 went from down - 3 (tag) to down - 3 (tag)(lv)
Level 3 Defense #6 went from down - 3 (lv) to hurt - 2
Power rating went from -2 to -3