@Retrogamer
All your post tells me is that a stupid Rogue could get curbstomped by a Solar. That strikes me as reasonably obvious. I will (again) emphasize that I was referring to your post of a few pages ago where they just meet on some featureless plain or something and fight.
That being said, it's trivially easy to defeat the Solar, even with just starting with my simple build skeleton. Why? All that rogue build, which I'll call the "Simple Rogue," needs is to win initiative. Or, alternatively, to be able to weather the Solar's first barrage. The first one is easier to do, just b/c all the modifiers are spelled out already, but the second isn't hard either.
Our Solar has a pretty good +9 to Initiative. A 20th level PC can easily get a +19, with a free reroll in there, +8 (dex) +4 (improved initiative) +5 (warning weapon) + 2 (ring of anticipation), and that's without even trying. He could also use things like a dorje of hustle, chronocharm of the horizon walker, belt of battle, or travel devotion to be able to make a move and a full attack. This is all de rigeur for any reasonably optimized Rogue. I haven't even seen a high level sneak-oriented rogue who couldn't hide or move as a swift action at the table.
Now, I'm sure that someone can counter whatever tactics I put up here. My point was that it's easy for a Rogue to post high enough damage numbers to murder a Solar (and many other high-level combatants) with ease. Even half of a build stub, which I provided, does that.
Hell, with a minor commitment to initiative -- 1 feat and less than 20k in gear -- the Rogue can simply do this. He teleports (Shadow Hand maneuver) or sneaks into the shrine or wherever. During the surprise round he quaffs a potion of Sign (another +4 on initiative) and clears his throat loudly. Rolls initiative. If necessary, uses the Belt of Battle to take a move action and hide. Then guns the Solar down.
There are other, equally useful, tactics.
I don't want to get too bogged down in this, as I'm not sure what the purpose of it is anymore. But, no well-built character, of any archetype, is really in a "no hope" situation against a stock CR-appropriate monster, barring those that are either specifically selected to nullify that archetype or character, or those that have wildly-inappropriate CRs.
P.S.: thanks for all the cites, guys.