And my argument was always that being named "the starter" in Andy Reid's offense means nothing. Eight different players caught passes on Sunday, and that was with their 2 top receivers on the shelf. It was the matchup that was intriguing. End of story.
Your argument is not based on any kind of historical data. Here are the stats for the Eagles #3 WR over the past five years:23/267/2
22/464/2
48/561/1*
22/377/2
35/498/2
* Greg Lewis started 9 games after TO got injured.
So, the Eagles #3 WR catches fewer than 2 balls per game and fewer than 2 TDs per year. So, being named one of the two WR starters in Andy Reid's offense is of paramount importance; Reid simply does not throw to his #3 WR very much.
Jackson was named the starter, at which point it became a reasonable idea to think about playing him. As long as he's a starter, he's a potential fantasy play. If he's bumped off the top of the depth chart, he's worth starting only in leagues where you get return yardage points.