Vick ran the ball 100 times that year. You're telling me that there were 100 busted plays in his 13 games? That's ludicrous.
Skye Philly wasn't running a option offense. When Vick ran it wasn't a designed running play it was a busted play where he took off. They ran a west coast offense. So the WR got a lot of targets and opportunities. Like I said in the read option or pistols offense there aren't a lot of targets for the 2# and 3rd WR. The stats this year prove it. No 2nd WR in Seattle, Washington,or San Fran had dominate numbers over Lafell. In fact in 2 less games Lafell may have better numbers then most of the option offense WR.
Also, your argument here is just weird. The read option doesn't present a ton of options for receivers, no. The teams you've listed (Carolina, Washington, Seattle, SF) all ranked 26th or lower in pass attempts. But you're conflating correlation and causation. All of those teams have weak talent at wide receiver, which probably led to them de-emphasizing the passing game.
Basically, if your argument is that LaFell is a satisfactory starting receiver, you're wrong. In his third year, with a good quarterback, he has yet to break 700 yards or catch even five touchdowns. He isn't terrible, he's just not good.