I don't have a big problem with the Gates contract - he's an outstanding player and a huge part of their team. I also think it was entirely independent of the VJax situation.
But I definitely disagree with the prevailing notion of Jackson being overvalued. In fact I think the reverse is true - he doesn't get as much credit as he deserves for how well that offense produces. They didn't have much of a running game last year, and most of what they got they got because of how good the passing game was. Yes, having Gates in there definitely helps. But that goes the other way too. I'm not sure Gates would be quite as effective as he is without Jackson commanding attention deep down field. It's a complementary situation.
If you look at Jackson's metrics, they are off the charts. He was simply one of the most, if not THE most effective receiver in the NFL last year. On a per target basis, he did more than anyone out there. Yes, he was put in positions to succeed, but I don't think you can just plug a scrub in there and have him be one of the most productive receivers in the NFL.
Are some of the folks implying that he is more or less average actually watching him? He's one of the biggest, fastest dudes on the field, and has developed excellent hands and concentration. From a physical skills standpoint, only Andre Johnson and Calvin Johnson strike me as comparable. Malcom Floyd may have the same SIZE as Jackson, but if Jackson doesn't play this year, I think people are going to realize Floyd != Jackson when he is getting WR1 coverage. Guys, there is a reason Floyd is going into his 7th season with less than 100 career receptions.
Sadly, it looks like we are going to find out how much Jackson's skills will be missed by the Chargers this year.
Edit:
THIS is not an average receiver:
some plays