Assuming capped cRatio is 2.0 for 1-handed weapons and 2.25 for 2-handed weapons (2.0 is pretty certain, 2.25 is slightly less so).
Values shown as 1/2/3 || 1/2/3 for 3 levels of a mob (eg: levels 81/82/83), showing 1-handed caps on the left, 2-handed caps on the right.
Def down values of:
00% -- Base
05% -- Dia or Box Step
10% -- Dia II
15% -- Dia III or Dia II + Box Step
20% -- Dia III + Box Step
25% -- Dia III + Box Step + Light Shot
32% -- Dia III + Box Step + Acid Bolt (32.5% actually, but using 32% to keep the columns neat)
Can get to different levels with various combinations. Key for analysis purposes is that Box Step takes you up one level in the chart. If you have a cor in the party, Light Shot after Dia will take you up a step on the chart fairly often, but not for every mob (timers don't allow it), and is just as likely to be used to help sleep birds anyway since they can't reflect it.
(yay, fun with colors...)
Greater Colibri, levels 81-82 [def: 322/327]
00%: 741/769 || 822/851 05%: 704/731 || 781/809 10%: 667/694 || 740/767 15%: 631/654 || 699/723 20%: 594/616 || 658/682 25%: 557/579 || 618/640 32%: N/A (resistant)
Mamool Ja (no Protect), levels 81-83 [def: ~336/341/346]
00%: 773/802/831 || 857/887/917 05%: 736/762/790 || 816/843/872 10%: 697/722/749 || 773/799/827 15%: 658/682/708 || 730/754/782 20%: 619/642/665 || 686/710/735 25%: 580/602/624 || 643/666/689 32%: 523/543/562 || 579/601/621
Sea Puks @ MJSP, Levels 77-78 [def: 313/318]
00%: 657/684 || 736/763 05%: 625/650 || 699/725 10%: 592/615 || 662/687 15%: 559/581 || 625/649 20%: 526/547 || 588/611 25%: 493/513 || 552/572 32%: 444/462 || 497/515
Trolls:
[checked data]
Hilltroll Ranger (81-82): 341, 346 Def
Hilltroll Ranger (83): 351 Def
Hilltroll Warrior (81-82): 351, 356 Def
Hilltroll Dark Knight (83): 355 Def
Hilltroll Red Mage w/Protect 4 (81-82): 393 Def
Hilltroll Paladin w/Protect 4 (81-82): > 425
[extrapolated data]
Hilltrolls (Mt Zhayolm), levels 81-83.
Rangers: 341/346/351 Def
Warriors: 351/356/361 Def
Dark Knights: 345/350/355 Def
Red Mages: 338/343/348 Def, +55 with Protect IV.
Paladins (estimate): 395/400/405, +55 with Protect IV.
Taking average of non-plds (and dispel protect from rdms):
Hilltrolls (no Protect), levels 81-83 [def: ~344/349/353]
Hilltrolls (no Protect), levels 81-83 [def: ~344/349/353]
00%: 791/820/847 || 877/907/935 05%: 752/780/806 || 834/862/889 10%: 713/740/763 || 790/817/842 15%: 674/698/720 || 746/771/795 20%: 635/658/679 || 702/726/748 25%: 593/616/636 || 658/681/702 32%: 536/555/574 || 592/613/632
Hilltroll Paladins (no Protect), levels 81-83 [def: ~395/400/405]
00%: 909/940/972 || 999/999/999 05%: 865/893/924 || 957/988/999 10%: 819/846/875 || 907/936/966 15%: 773/799/826 || 856/884/912 20%: 727/752/778 || 806/832/859 25%: 683/705/729 || 756/780/805 32%: 614/635/656 || 680/702/725
In general, 2-handers need 70-80 more attack to cap out cRatio than 1-handers on the same level mob. About 20 of that will be covered by the str:att ratio for 2-handed weapons, which means they need an extra 50-60 attack. War and /War get another 10 from the Attack Bonus trait, leaving them with another 40-50 to make up. Drk gets +48 from Attack Bonus traits, leaving them at most 10 behind the equivalent 1-hander relative to cRatio cap.
Target attack varies by the debuffs you have available, but there are practical limits to consider as well:
Acid bolts aren't reliable outside of a crossbow rng. A thf using sushi can also hit fairly often, but accuracy is generally going to be only moderate.
Not all rdms merit Dia III, and not all rdms and/or parties can keep up with the MP requirement costs of using it.
Dia II should always be expected.
Not all parties have dnc or cor/dnc for steps, and most won't use a dd/dnc.
Wars and /wars using Berserk will quite often be going above the cap for a given debuff level, severely limiting its usefulness.
