[Warrior5]

To answer your original question would almost require a book. <I>On paper,</I> the Chiefs receivers match up well against AFC West secondaries. Conversely, our secondary is suspect right now for a plethora of reasons, but primarily because we don't know what we don't know yet.
The Raiders unquestionably have a stud set of receivers and RBs; the Chiefs' secondary will get burned at times, so the key here is to get to Gannon.
Trying to group Gonzales with WRs at this point is almost like comparing apples and oranges, because a TE does so much more than receive. He must be able to block, feint, pass protect, block downfield, and of course, receive. Moss isn't required to do the same.
But as far as individual receiving skills go, I'll echo what AJKCFAN said. I've seen Gonzales (as I'm sure you have) catch passes thrown behind him while he's on both knees, after he's been interfered with (yellow flags flying all over the place), and with the defender STILL draped all over him. Against the Jags (I think it was two years ago), I watched him catch a flare pass at the same time he took a vicious hit head-on from a Jag defender. Not only did he hang on to the ball; he jumped up, handed the ball to the ref, grabbed the defender by the collar and yelled in his face, "That was a great hit, man!"
Sorry, I digress... I haven't seen a LB yet that could cover Gonzales... I love the guy.