So, I was going through my barracks color coding my units with the new favorites system when I got to Exalted Chrom. I pulled up his page on here 'cause I didn't remember what IVs mine had off the top of my head. (He's +attack/-speed.)
The page made the mistake of saying his resistance was "beyond salvageable". So I did math. They're absolutely wrong and Exalted Chrom is completely insane.
Assuming neutral (17) res:
+3 from Fury makes 20
+6 from Fortify Cavalry in horse emblem or Res Tactic in a mixed team makes 26
+5 from Sealed Falchion makes 31
If he's +10, that goes up to 35.
If he has an ally support, that goes to 32/33 if +0 and 36/37 when +10.
If it's wind season, he has the blessing, and Gunnthra is on his team, that's another +4!
And if you decide to summoner support him, that's another +2!
Fortify buffs, wind blessing, and an active Sealed Falchion bring base kit +0 neutral res Chrom to 35 res without ally support. +10 is 39 res without ally support.
With full ally and summoner support, he can come to 39 res at +0 and 43 res at +10!
Adding Drive Res (+3) or Ward Cavalry (+4) can bring him even more res! And if you're in horse emblem, you still have two open c slots for Wards, so you can have +8.
And if you really want, you can toss a Res +3 seal on him!
Absolute max with neutral res/base kit/res seal/active sealed falchion/fully buffed, a +10 Exalted Chrom comes to a whopping 39 visible res and 54 in combat. At +0, he comes to 35 visible, 50 in combat.
For a res bane, just subtract 4 from that dang superbane.
If he's ever a bonus unit again, it can go even higher, too, with that bonus giving another +4. Didn't count that in the math because who knows when that will happen.
In conclusion, Exalted Chrom can get some pretty crazy stats and buffs fix everything. Whatever boon and bane you get on him, he can be really, really usable.