Yeah, I don't really think it would be feasible for anyone to defeat you at this point. Even both me and marverni together, unless he has some really nasty surprises in store for you. Me, I've been gearing up most of the game to kill bird people, not giants. Some of that overlaps, but I would definitely want to change things around for anti-giant duty and I don't think I'd have enough time at this point to do it before I was crushed. I certainly don't have anywhere near your number of SCs, so I would have to rely on mage-backed armies and anti-sc groups... I think I could kill a few more jarls than caelum did, but overall I would expect to lose horribly
I only bothered to deploy counters to what caelum actually used at least once, so there are areas I haven't really developed terribly much that would be enormously more useful against you. For one thing, I hardly have any of my main battle mages because every remotely large battle included a storm... rendering my hannyas incapable of hitting a damn thing. There's also a school or two I haven't finished off because I more or less haven't been fighting big army battles against caelum since turn 30 or so, when one of his massive armies with storm/wrathful skies/air elementals/thunderstrike spam was defeated by one of my massive armies of demons and lightning immune thugs. I actually outlasted him, his wrathful skies killed enough of his own 75% resistant troops to make him rout
Of course my losses in non-immune units were pretty horrific, so it was pretty much a mutual decision not to waste our resources on one another.
Anyway, I'm just not prepared for it, it would take me over a year to even think about invading you and I'm going to have my hands full with caelum for a while in any case. I'm surprised you've lost so few jarls, I must have seen the deaths of nearly every jarl who died. It was giving me the impression that you were actually having some vague level of difficulty :P