How are you going to compare Resident Evil 4, a game that released in 2005 and was reviewed according to the Gamecube's standards to, Resident Evil 5? A game that released in 2009, that was reviewed according to the 360's and PS3's (superior consoles to the Gamecube) standards.
V ALL MY OPINION DUN TAKE AS FACT V
You can't compare them based on reviews or specs or anything, but based on content you definitely can. Resident Evil 4 was most definitely capable of giving some kind of fright or shock. You don't get that out of Resident Evil 5 (unless you play on Pro mode, solo fighting Bird Beak Woman + Wesker and you have my kinda mind). RE5 was nothing but an action game, whereas RE4 at least
tried to keep a little bit of scare in. At leas RE4 has atmosphere, y'know?
Anywho, I don't believe in franchise fatigue. Games don't decrease in quality because so many are pushed out into the world -- that's like saying that X brand of lawnmower will die out because it has so many revisions. Just not the case. Yeah, it's somewhat costly (unless you do an OoT--MM where you reuse all the models of the previous game), but it's not gonna increase/decrease the quality of the series. Just give it more publicity because there are more installments to relate to.
[As a matter of fact, if I did beleive in FF, I wouldn't put Call of Duty on that list. Every CoD has been the same quality wise EXCEPT Modern Warfare 3 because it's spawns freaking suck and the MP7 is easily the most broken weapon in the game]