you are still placing the burden on them to hit top pair on the flop, which doesnt happen often enough. theres no way they are stacking off with high cards on a random board unimproved vs a cold call of their 3bet. If you are hoping for them to stack off with top pair on the flop with a high card 3bet range of AK/AQ/KQ when u have AA, then u should just 4bet preflop because they will get it in with at least AK out of that range (occasionally AQ if you have an acceptable image), which they will have with roughly the same frequency as they hit will hit top pair on the flop if you cold call , not to mention stacking off with JJ-KK always whereas a bad flop could deter action from any of those hands as well.