I can't remember Harry ever calling Mab a god. Could you quote an example? I also don't remember him giving any god in the series a capital G unless they were the White God. I do remember someone talking about "lesser gods" which implies greater gods...Does it say that Ferro serves something? I can't remember. I do remember that Ferro was called a VP of Creation which is the same thing Uriel was called so...that might imply that they're on the same power level. If that is true though than why was he at Biancia's ball? All the other beings on Uriels power level (the mother maybe?) are sort of above things like that. 

6. ferrovax - is this because he's the OLDEST dragon? (i thought it was an empty boast) or because he's a dragon?
Ferrovax feels absolutely no need to boast.  It's because he /is/ a Dragon, large D, an elemental force of the cosmos.  He isn't some kind of Smaug hanging around a nice apartment.  He's a Dragon in a more Asian sense of the concept, a semi-divine being who was once given authority over various portions of the mortal universe, and who was responsible for their orderly procession.  There /are/ Smauglike dragons (though not nearly as many now as there have been in the past, thanks George!) but they are essentially nothing but emissaries and servitors created in the image of the real thing.
Regardless of big D or little d, dragons almost universally resent humanity for usurping the balance of power in the world.
2009 Independence signing

Since we're on the subject of Mab's power during different seasons.  Did anyone consider that to Mab and Titania the changing of seasons if just a shift in Where they have more power?  After all, while it may be Summer in Chicago it's Winter somewhere else.  In a technical sense the Lady's have no clear dominion anywhere,  the Queens trade continents twice a year, and the Mothers live in a single cottage.  I think there is some symmetry there.  Thoughts?

Her physical presence in Chicago meant that an unseasonably long and cold winter sat on the area until she left.....how does that not represent the "actual" season of winter?  Her presence directly effected the "actual" season of Winter.  That implies she's pretty deeply tied to it.

Except how keeping herself dominant in the physical world so far into Spring and pushing into Summer to keep Harry alive taxed her to the point of making her look like an insect instead of a woman?   And that Harry even comments to her about how she was pushing herself by staying around when it was becoming the time of Summer.

All of the Queens are Winter/Summer.   They are different facets of that power, and represent different manifestations of its nature and purpose, but they are all Winter/Summer.

Except that Winter is Mab.  His mantle is Mab's power within him.  As Maeve put it to Harry on the  bridge, the power within him is Mab herself, which is why she is weak to him.   He wasn't just saying "Screw Winter" he was saying "Screw Mab"  because they are one in the same.  By denying the rules that he was bound to through oath and fealty, (whether he understood this or not), his power through her would be denied him, and I don't see any reason he couldn't be reminded of this via a temporary paralysis reminder.  Besides, as I said before, we have direct evidence that Winter Fae can, and have healed physical injuries on a mortal before, specifically Harry.  So it stands to reason that a Fae with even more power than the one who healed him in the past, could heal him as part of a bargain.    Harry in fact goes into great detail about how hard it is to heal someone via magic, and that it meant that Leah had a direct line of influence/power over him to be able to pull it off.   By swearing fealty to Mab as her Knight, and boinking her on the table...well....that's about as "direct line of influence" as you can get

Random Thought: I wonder if Mother Winter losing her walking stick is related to the increase in human longevity and rise in population? I doubt she lost her walking stick and immediately became a homebody. She probably slowed down over the centuries.

If she's "Death", and isn't getting out as much as she used to, could be related. Don't think it really means anything. Just a thought.

A vampire lurched toward Thomas, while another reached out to grasp Susan. She thrust her cross in its face, but unlike with Mavra, the wood did not blaze to light. Faith magic isn’t always easy to work, even on vampires, and the Red Court, creatures with a more solid hold on reality than the more magical denizens of the Black, were not so easily repelled.

Faith is a power of its own, and one even more elusive and difficult to define than magic. A symbol of faith, presented with genuine belief and sincerity, is the bane of many an otherworldly predator—and one of the creatures most strongly affected were vampires of the Red Court.