Not quite sure what you mean by this? Most of your PRR will come from your armor AFAIK? Moreover, the "heavier" the armor, the more your BAB contributes to it. For example..
Bonuses from armor proficiency
WF PRR is currently only giving straight BAB (no +6) with adamantine body.
- Heavy Armor gives you Physical Resistance Rating equal to your Base Attack Bonus +6.
- Medium Armor gives you Physical Resistance Rating equal to 2/3 of your Base Attack Bonus +4.
- Light Armor gives you Physical Resistance Rating equal to 1/2 of your Base Attack Bonus +2.
With Adamantine Body...
25 (with Divine Power)
10 passive DoS I
10 passive Tier IV Unyielding Sentinel
=45 (23.6%) Passive Total
10 DoS I Defensive Stance
20 Unbreakable Stance
=75 (34.4%)
Without a body feat (zero PRR granted native)
10 passive DoS I
10 passive Tier IV Unyielding Sentinel
=20 (11.8%) Passive Total
10 DoS I Defensive Stance
20 Unbreakable Stance
=50 (25.7%)
I think these totals (~10% mitigation) warrant the feat cost. This does not even cover the fact, that with the substantial AC that adamantine body grants to docents, DoS boosts to AC, and US's passive AC bonus, A very respectable AC can be reached.
Add to that US's DR auto-grant, Elemental resists from FvS, and nice saves...This can be a VERY survivable build....albiet holistically, rather than specialized.
Paladin Levels are already granting Martial Weapon Proficiency. The only use for Master's Touch would be for Tower Shields. Unfortunately, that's exactly the drawback of Wizard instead of fighter. One wizard level Vs. Two Fighter Levels costs you TWO feats, because you would need to spend an EXTRA feat to qualify for DoS (Fighter grants the qualifying Tower Shield Proficiency for free).Master Tough is replacement for martial weapon feat
Actually, I believe it's...(spell power sources halved and build only has Life Magic III-60sp) Let's also use the highest Devotion source of 120Heal is still pretty good with a devotion item....snip..
150base * (1+.3+.6) = 285
For Cure Crit....Caster Level is 17 with Unyielding Sentinel (assuming a 12/6/2 build), same Enhancements, Devotion, and Maximize (150sp according to wiki). This Spell also recieves 115% from all spell power sources.
39base * (1+.69+1.38+1.725) = 187
So yes, Heal is still better. It would be up to the individual as whether or not it's worth it to take FvS 13 (CCW=192) for both Blade Barrier and Heal Vs. the extra feat from 1 Fighter level. The question would be, which feat to drop? I just don't think it's worth it for this particular build. Perhaps if you don't plan on chasing Epic Toughness with a +3 CON tome and level up, dropping it, and pushing OC back to 24 would work if that's your preference.
ShadowFlash