"Pakistan is one of the top 3 odi sides in the world, if you don't believe it, stick around and see how things go"
We stuck around this whole Asia cup

, if we finished bottom at the super 4 stage, then why would the world cup he any different? Especially considering winning the Asia cup which at this point is just a tri series between SL, Pak, And India is much easier then winning a cup where SENA is involved.
"Pak has 3 batsmen who easily are amongst the top 6 or 7 in the world"
Which 3 batsmen are you talking about? I'm gonna assume babar, Imam and Rizwan. Neither of these chads are top 6/7. These 3 are below Johnny bairstow, Butler, Ben Stokes, Shubman Gill, Virat Kohli, Steve smith, Kane Williamson, David malan. I can keep going on and on. But I just named you 7 batsmen who are superior XD.
"Pak has the best pace attack with or without naseem"
Without naseem we are shooting ourselves in the foot. Also we do not have the best pace attack. Bumrah is superior to our trio. Naseem is world class and easily uptheir with the likes of stark and hazlewood( yes I'm not even kidding, naseem is glenn mcgrath Level of line and length), but shaheen is no where near the top pacers of the world, he's a bang Average middle overs and death bowler. As for Rauf, Rauf is basically Liam plunkett 2.0, a good wicket taker but expensive usually. He isn't superior to many pace attacks.
Australian and Indian pace attack is superior to us, so is NZ. England is debatable but without naseem they are 100% superior to us.
"The only concern is the middle overs and wicket taking spinner, but shadab is expected to bowl better, I'm 100% Sure of it"
The middle order is non existent with the exception of chacha who's a mediocre bat, and isn't doing well against 1st string sides. The rest aren't even a factor if we go with agha, Shadab and nawaz/Faheem which is what Pakistan usually goes with.
The spin department that we rely on is one of the worst I've ever seen. Shadab is horrible. Nawaz isn't horrible but he's extremely defensive and a bottler under pressure.
It's really usama and abrar. Abrar is an excellent variation spinner but he's slow and I'm worried in odi that'll expose him. Usama is good but he has zero variation and is mostly reliant on line, length and bounce meaning he'll only function on spinning wickets. He's still a good bet due to the tournament taking place in India.
As for winning the world cup, bro cricket is an unpredictable sport so any team can win the World Cup from pak, India, Sena and even Sri Lanka at this point. But that doesn't mean we are a top 3 odi side.
Do a proper player analysis and compare side by side and you'll see why we ain't no 1 or 2 or 3.