We'll see. I'm actually considering trying this out for myself because it could really help the Exp rank and I'm just going to keep track of how much Exp I get from this chapter. What I'm doing is recording the optimal amount of money possible to get (anything that isn't nailed down, essentially). If a sage starts out with Bolting equipped and Elfire backing it, I'll record Elfire as potentially stealable. After that, I'm going to allocate Funds (this I'll do in the topic) to each unit before considering promotion (basically how many weapons does that unit need to finish the game in an S Rank run). You'll see what I mean.
I don't get the first half of the first paragraph.
20/0 Lyn - 29 HP, 6 Def (50% chance of 6+ Def, give her the benefit of the doubt here)
20/0 Erk - 29 HP, 6 Def
20/0 Serra - 26 HP, 5 Def
20/0 Prissy - 23 HP, 5 Def
20/0 Lucius - 26 HP, 2 Def
I understand that all 4 magic users have much higher Res than Lyn. That's not my point. All of them (aside from Erk) lose to Lyn in durability while Erk ties Lyn (again, putting Res aside). How do they "fail at life"? And this is before promotion because Lyn gets 3 HP, 3 Def and 5 Res boost which tops all of them (except Erk again).
As for the second half of that paragraph, who cares? I mean, it's not like a 20/1 Prissy is getting 21 Exp more per kill than a 20/1 Canas against a generic promoted enemy, right? That's not important because she can't survive attacks even though she has 1-2 range and ~48 Avo with Fire before supports, right?
Also, I'm not sure if Oswin is even guaranteed a Knight Crest because Sain and Kent both outrace him to level 20/0 and support each other. I think Oswin's fighting Lowen for the Earth Seal to be honest.