CTH vs DX vs PTH (in General)

I know there have been discussions before regarding DX and CTH, but I'm still unclear on how they interact.
For example, if a tank has a +1 dagger and 20 DX, it's pretty much guaranteed to hit an enchanter with 20 DX.
If the tank has 25 DX (or 30), he might even hit twice.
Now what happens when the tank has 20 DX and a +5 weapon and his target has 1000 DX ? Is there some point at which DX cancels out PTH ?
Or, conversely, if a tank with 10k DX and a +5 dagger attacks an enchanter with an evasion effect of 10 can she hit ? Is there a 0% PTH chance but a 100% chance of a Dex hit ?

There is no point where DX cancels out pth... a 20 DX minion with a +100 weapon will hit an enemy once every time even if the enemy has 10 billion DX, so long as evasion, DBs, AoI, and RoBF (if it gets "fixed") are not involved...

I also believe max DX advantage (not sure what exactly this is at, but its probably in the wiki), you can get up to 167% cth.

While DX cannot cancel out pth, "pth reduction" via evasion, AoI, DB, and RoBF (if it gets "fixed") cn cancel out DX. Meaning a minion with 10 billion DX will not hit with 0 pth against an opponent with +167 DBs (or (167) evasion effect, or any combo that totals to 167 effect)...

That's why i wanna get a massive + on my VB and work it on a 10k DX (at best) tank :P

That kind of tank is seriously old school. Like pre-evasion, db, cb1 old school :P

I'm taking a page from Rangers book and combining evasion with a BIG EC, as well as DB. I just need another +40 on the boots and Mikel should miss me as well :)

5k dex on my wall should be plenty to get max dex based cth as well.

"For example, if a tank has a +1 dagger and 20 DX, it's pretty much guaranteed to hit an enchanter with 20 DX."

Actually, with no other equipment involved, the tank would have a 51% chance of hitting one time in every round...

(20 DX / 20 DX * 50%) + 1 PTH = 51% CTH

That's the bit that I forgot. Every "point" of + or DB+ or evasion + is 1%.
That combined with the 167% theory that HM gives is pretty much what I was wondering.
I guess, really, at some point DX just has to be in the ballpark.
Maybe Ranger could make a dex based tank with his MPR but everyone else needs lots of a weapon with lots of +.

The maximum dex advantage to hit is 160%.

This was confirmed when Jon allowed us to see the exact hit %'s when evasion was broken.

With a 1H weapon it takes less of a dex advantage to get to that number, but the max chance is 160%.

See? I am wrong on occasion. :P But at least i recognize this :)