As i have posted in other threads. the mizuno has great pop. My daughter loved hers. The only problem is that she broke 2 of the drop 11s, and one of the drop 10s in a years time. All cracked in the barrel area, not in cold weather. She does have a pretty high bat speed per the blast sensor, high of 65.8mph and an average around 60mph with her drop 10 ghost advanced in her last session. I was told by the rep that i worked with on the return that if she has a bat speed that high, there is no way she should be swinging a drop 11. She has made a ton of growth in height and strength over the past year since we bought the bat and I wish I would have gone to a drop 10 sooner.
As for comparing the mizuno to the ghost advanced, the ghost is hotter and my kid says the sweet spot is bigger as well. She stated that the mizuno felt more rigid like the LS Xeno.
In head to head, the ghost seems better.. but it is significantly more expensive as well.
We also got a warranty on her backup/cage bat that was a grey/blue easton ghost that we got on black friday special at dicks last year when it started separating at the connection. They sent us the 2020 double barrel as a replacement a couple of weeks ago. It is really close in performance to the advanced, but seems a little more end weighted. For stronger kids that can swing it, they may see an advantage.
I would chime in on demarinis, but my kid wont even look at them as she thinks the connection looks weird.
She also has swung the 2020 lxt, and that is a great balanced bat, but it did not appear to have the pop of the advanced.
Several points you made to answer to if you don't mind. I said the Mizuno PC is as hot as the ghost not the GA. It outperformed the Ghost about 50% of the time...mostly on mishits. Why you may ask? A dirty little secret that Mizuno doesn't want the authorities that are bat testing to know, since they only test bat compression on the SS, the outer limits of said SS are actually hotter. Thus the mishits went further than the Ghost's did on an average of 3.8 feet but in direct competition with the Ghost's SS, the Ghost outperformed it by 1.4 feet on average.
You're absolutely right that the PC connection point is more rigid. That's an effort to provide stronger feedback to hitters. Unfortunately, when you hit a Ghost, GA, Demarini, etc., if it's mishit, all anyone sees is the ball not going very far. Someone mishits a PC, they get a stinger much like the metal RT's, the old one piece bats and the wood bats. For the life of me, I can't understand why hitters don't want feedback from their bats. DD grew up a metalhead. If she hit one off the end or close to the hands, she definitely felt it. Guess what? It turned her into arguably one of the best hitters in the state at her age level because fewer and fewer balls were hit off-center of the SS.
As for the GA vs G end weight, they are the same. The weighting of the bat is placed in the same spot. The difference is on the GA, the outer shell is a tad thicker with the inner limiting barrel made of a new and different composite than the regular Ghost and the GA is actually heavier per bat size from .1 to .2 OZ than the Ghost giving it more of an end-load feel for most. Of course, this will depend on the hitter.
As for Louisville Sluggers and Demarini, for those that don't know, they are owned by Wilson. Everything in their lines right now are tweaks and repaints. They have some stuff in R&D but they have yet to come out with anything that would challenge the new tech performance of the Ghost, Ghost Advance, Power Carbon or Quatro Pro.