Stats in the NFL , particularly career stats are not as significant, wen judging a career, with rule changes, all the great players before the mid 80's are usually left off the lists...yardage numbers are grossly out of balance.
particularly the 1970's era, the passing stats are not comparable because of rule changes. 50% and slightly above was a good completion percentage in that time period.
With all the speed in the secondary in today's game no one would ever complete a pass down field if they had the 1970's rules...
<TABLE border=0><TBODY><TR><TD>
1.</TD><TD>
Dan Marino </TD><TD></TD><TD></TD><TD></TD><TD></TD><TD>
61,361</TD></TR><TR><TD>2.</TD><TD>
John Elway </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>51,475</TD></TR><TR><TD>3.</TD><TD>x-
Brett Favre, Green Bay</TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>50,990</TD></TR><TR><TD>4.</TD><TD>
Warren Moon </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>49,325</TD></TR><TR><TD>5.</TD><TD>Fran Tarkenton </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>47,003</TD></TR><TR><TD>6.</TD><TD>x-
Vinny Testaverde </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>44,638</TD></TR><TR><TD>7.</TD><TD>Dan Fouts </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>43,040</TD></TR><TR><TD>8.</TD><TD>x-
Drew Bledsoe, Dallas </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>41,159</TD></TR><TR><TD>9.</TD><TD>
Joe Montana </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>40,551</TD></TR><TR><TD>10.</TD><TD>Johnny Unitas </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>40,239</TD></TR><TR><TD>11.</TD><TD>Dave Krieg </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>38,147</TD></TR><TR><TD>12.</TD><TD>
Boomer Esiason </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>37,920</TD></TR><TR><TD>13.</TD><TD>Jim Kelly </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>35,467</TD></TR><TR><TD>14.</TD><TD>Jim Everett </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>34,837</TD></TR><TR><TD>15.</TD><TD>Jim Hart </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>34,665</TD></TR><TR><TD>16.</TD><TD>Steve DeBerg </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>34,241</TD></TR><TR><TD>17.</TD><TD>John Hadl </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>33,503</TD></TR><TR><TD>18.</TD><TD>Phil Simms </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>33,462</TD></TR><TR><TD>19.</TD><TD>
Steve Young </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>33,124</TD></TR><TR><TD>20.</TD><TD>
Troy Aikman </TD><TD> </TD><TD> </TD><TD> </TD><TD> </TD><TD>32,942</TD></TR></TBODY></TABLE>