Perhaps instead of saying that based on past history of drafts (which is completely irrelevant btw) there will only be 1-2 players that pan out, you should analyze each player specifically and make that judgment. Again, each draft is different and each player is different.
Basically what you're saying is that since Kenyon Martin went #1, every #1 pick is going to be an average to slightly above-average player for his career. Or that since LeBron went #1, any high schooler that could potentially come out in the future is going to be a bonafide star in the league. Basically what I'm saying is that your argument sucks. If you still feel strongly about what you're saying, come back with an analysis of the players and tell us why you don't think they'll be good. Don't just point to past results in the draft and expect that to be a solid argument.