Both Halo Reach and 4 were good games and do you really want to count an RTS much like how you want me to count Hyrule warriors ? 

+5 Zelda
-7 Halo

Once again, that is subjective. Quality varies between producers.

+Halo
-Resident Evil

Hyrule Warriors isn't out, you don't know if it'll be bad or not. I notice you didn't mention ODST. And from what I hear from people, the general concensus is that 4 was pretty lame. Not a bad game, but lame. And that it was because Bungie didn't make it. Reach I never understood the hate for, but people seem to hate it too for whatever reason, from what I've seen.

I don't know that it's even fair to talk about quality consistency for a series that's been around for little over a decade with just 7 games vs a nearly 30 year old franchise with nearly 20 games. You're inevitably going to get some that don't shine as much as others, as we're ALREADY seeing with Halo. Different developers, different directors, different approaches over time mean that you can't expect perfection from a franchise every time. Halo has had good quality consistency, as has Zelda. You can say Halo is better if you want, but you can't just say it's objective fact because of something bullshit like "quality consistency" as though that were something measurable and standardized.

+5 Pokemon
-7 Uncharted

@Bold It is measureable using sales ofcourse. 

I don't remember a lot of the portable Zelda's being good ...

Portable Zelda has many times been a 3rd party taking over. There have been just as many good portable games as there have been bad. There is a difference between the two teams, one team does portable, one does console. If microsoft had a portable console, they would have had a different team do the portable halo games.

Metroid +5
God of War -7

+5 Super Smash Bros.
-7 Mario