With the Tackle and 4k changes maybe they want to make her 4KT have a significantly higher rate of success. I'm not sure what all the requirements are aside from blocking and whiffed holds/highs but I've occasionally had success making that work without canceling. Most of the time when I get 4K to connect the opponent will be in their "crouching-hit-recovery" state and the Tackle won't work (as if they were ducking), other times (again not sure of all the situations as it doesn't happen a whole lot outside of aforementioned requirements) they will remain in a standing state after taking the damage and the hit stun is long enough (barely) to get hit by the Tackle if they don't low hold (haven't seen that yet though).