Do I think that the top 15 to 20 players on a top D1 including those who don't have the tools to make the big leagues but may be better players for now are as good as the the top 15 to 20 players from a short season A team? Yes, especially the pitching where pitchers who are better pitchers now may not be drafted because they don't have enough of an upside.
Do I think there's more depth on the A team? Yes.
Do I think there is more talent on the A team which many people here have noted?
Yes, but talent alone doesn't get the job done. (I'd make a crack about the Yankees here but I really don't think they had the talent. Pitching is what wins playoffs almost every time.)
Do I think the college team will play as a team while the A team will play as a bunch of individuals?
Yes.
Where do you get 5 or 6 who might get drafted? The average each year for the top 25 D1 teams is over 6 players meaning that 15 to 20 will get drafted or signed at the end of their college careers including a select few who will skip short season A and go to A ball or even in extremely rare cases AA ball.