With the huge primary stats we gain in 2.2, CRT and DET are pretty much of equal value.
I fixed the mistake with food in the first post and
Your second claim is not true either:
Even value CRT and DET Build 1 using full CRT and DET Novus: http://ffxiv.ariyala.com/NGQV (Even CRT and DET build came out the exact same as DET oriented build in the first post due to how itemization is done).
Even value CRT and DET Build 2 using High Allagan: http://ffxiv.ariyala.com/NGR0
Bio
(77*.2714745 + 576*.1006032 + (330-202)*.0241327 + 77*576*.0036167 + 77*(330-202)*.0010800 - 1) * (40/100) * 1.3 * (1 + 0.5*(0.0697 * 535 - 18.437)/100) = 143.3877
(75*.2714745 + 573*.1006032 + (363-202)*.0241327 + 75*573*.0036167 + 75*(363-202)*.0010800 - 1) * (40/100) * 1.3 * (1 + 0.5*(0.0697 * 535 - 18.437)/100) = 141.8901
Bio II and Miasma
(77*.2714745 + 576*.1006032 + (330-202)*.0241327 + 77*576*.0036167 + 77*(330-202)*.0010800 - 1) * (35/100) * 1.3 * (1 + 0.5*(0.0697 * 535 - 18.437)/100) = 125.4643
(75*.2714745 + 573*.1006032 + (363-202)*.0241327 + 75*573*.0036167 + 75*(363-202)*.0010800 - 1) * (35/100) * 1.3 * (1 + 0.5*(0.0697 * 535 - 18.437)/100) = 124.1538
Fester
(77*.2714745 + 576*.1006032 + (330-202)*.0241327 + 77*576*.0036167 + 77*(330-202)*.0010800 - 1) * (300/100) * 1.3 * (1 + 0.5*(0.0697 * 535 - 18.437)/100) = 1075.4084
(75*.2714745 + 573*.1006032 + (363-202)*.0241327 + 75*573*.0036167 + 75*(363-202)*.0010800 - 1) * (300/100) * 1.3 * (1 + 0.5*(0.0697 * 535 - 18.437)/100) = 1064.1758
If you factor in the difference in the Spell Speed difference as well, Build 2 will yield about 1.5% more damage than Build 1. That's also excluding the difference in Enhanced Pet actions procs, which in itself is harder to quantify.
You are correct when saying that it is better to keep a balance between both CRT and DET but your theory of DoTs being stronger with a full DET/CRT Novus than High Allagan is still wrong, High Allagan is still better.
CRT while not a direct damage stats is still a damage modifying stats which can be calculated to give an average damage value of an ability.