What you have to remember is Benitez is slowly making us into the Valencia of a few years ago and even their strikers didn't really produce only Mista in 2003/04 when they won the UEFA Cup. Benitez's style usually means it's the midfield that score the majority of the goals.
However I do share your concerns with our strikers but I suppose any one who thought Morientes was a prolific striker really didn't do there homework on the guy. If you look at his record he hasn't really scored a lot of goals and I think maybe one season where he scored 19 for Real Madrid and that was that. Same with Peter Crouch he isn't profilic either. He's probably scored less goals than Kevin Phiillips. Cisse is our only real prolific striker, yet he is hardly played and when he doesn't look like he knows what he's doing, he just runs aimlessly with the ball and blasts the ball instead of placing it, which is probably why he hasn't made an impact.
I think youre being a bit too harsh on Garcia, he tends to get stuck in now into challenges, chasing balls, which he didn't do like a year ago. his ability to keep and then distribute it needs to be worked on but if he can that sorted out then he will be a real assest to us in the future.