Yep - the power to weight - and weight to wing area of good aerobatic models -is light years away from -say a 182.
But there are some full scale aerobats now that simply kiss off most of the "rules for a man carrying airframe".
I recall -as do many -that you can perfectly trim a --say a Mooney -for level cruise - then extend both arms - lean forward - and the trim is gone -
In the new aerobats full or model - the "trim for cruise" is not even part of the game.
The idea is to have the ability to instantly change attitude - as needed at ANY speed or ANY attitude.
For this control throws are outlandish -(never enough)
Power is gross overkill (never enough)
And the human factor -is the weak link- unless you are stressed +- 15 g's-- or have the reflexes of a mongoose.
The CG? -oh about there - let's try it - really not a big deal--