Does that mean you shouldnt take a wideout in the first, no. Just because teams seem to be able to get good value in the later rounds and higher picks turn into busts from time to time at the WR positions is not enough of a reason to pass on a good one. More times than not, WR in the first two rounds are more productive than those taken in the later rounds.
Hits v. Misses on WRs by round, 2000-2006:
Admittedly arbitrary definitions:
A "Hit" is a guy who has stuck around for 3+ years as a legit #1, #2 or #3 WR.
A "Miss" is a guy who was never as much as a truly productive #3, at least not for very long. A "Miss" in the first two rounds would, of course, be a "Bust", but probably not so much for guys taken in RD-3 or later.
A "Star" is a guy who became a legit #1 or a very high-value #2 (could have been, or turned into, the #1 for another team).
I didn't go beyond 2006 because the jury is still out on a lot of those guys.
1st RD
16 Hits
15 Misses
8 Stars
2nd RD
19 Hits
10 Misses
3 stars
3rd RD
7 Hits
20 misses
3 Stars
4th thru 7th RD
14 Hits
124 misses
4 Stars
During this period, there were also 6 Hits and 2 Stars culled from among countless Undrafted College Free Agents.
So, this more or less supports your hypothesis on the averages. Pretty clearly, if you must have a "Star" WR, you're odds seem better in Round-1. However, if you're just looking to "Hit" on a solid contributor, you're maybe taking a much lower risk waiting on a Round-2 guy.
Of course, each draft class is very different:
- The 2003 and 2006 drafts produced only 5 Hits combined in the first two rounds, though 3 of those 5 became "Stars" (Andre Johnson, Anquan Boldin, Santonio Holmes).
- The 2002 draft produced 9 Hits by itself in the first two rounds (and only 2 Busts), though none of those 9 guys became real "Stars".
- The best year for the later rounds (lumping together 3 thru 7 here) was probably 2006: 5 hits and 2 Stars with 18 Misses, with all the Hits and Stars coming in the 4th and 7th rounds.
My feeling is that 2010 could be a pretty good year:
1st Two RDs
7-10 Hits
1-3 Stars
3rd & 4th RD
3-5 Hits
0-1 Stars