Boy, when you guys get into it... it really can go on for a while!
As
@Power Player has said... there are many factors here. So, why are you all arguing and "discussing" this for so long?
First, Alcaraz has more ability and talent in his little pinky than most of us here... so what he can do or does and with which specs, has very little to do with any of us.
Second, those are the specs that are right for him (whatever they are)... so why are you so concerned, as it doesn't have much to do with you?
Third, as
@tim-ay has said... he likes 330. That's what it's about. Find what YOU like and what suits you when you are playing YOUR opponents and at your level. Don't worry about others and their specs.
Fourth, I play at the specs I like, not because Djokovic or Nadal, or any other Pro use them... but because I like it that way... and I will go up or down with my specs as it suits me and my game. Some racquets will work well at a lighter weight, so I will not go higher for the ego of it... but others may not play as well at the same (lighter weight), and based on playing with them and my experience of what the opponent is doing and the feedback I'm getting, I will go up in weight because that is what is needed with that racquet.
Fifth, and foremost, WHY are you all arguing with each other??? Just state what YOU like, except what others like... and move on!
Whatever Alcaraz is using suits HIM well... maybe that would work for you, maybe it won't... the only way to find out is to get the PA Vs and get it to those specs and go and find out. Then come back here and say "I've tried those specs and it did or didn't work for ME"... don't worry about the rest of the people and accept their experience as their own.
Most of us wouldn't even see the serve of those Pros... let alone be able to say whether they can return it or not. The only way we can possibly know and comment if something is possible is if we have an apples-to-apples comparison. So, who amongst us here has the ability, reflexes, hand-to-eye coordination, conditioning, speed, experience, and strength of Alcaraz? Anyone...?
So may we table this discussion and debate... and someone out there go and approach Alcaraz and say"Just out of interest... what are the specs of your racquet... cause I want to be you". Then we will know for sure.