Oh sorry. In that light it just didn't make sense that you brought up the quote at all...
Well, nice to know that we're being somewhat cordial now. I initially brought up the quote not because I'm an irrational Sidious fanboy, but because I believe--similar to Gideon's reasoning--that a true match between Luke and Sidious is an absurd engagement between two characters that are virtual Force deities. They possess powers and knowledge in excess of any other, and this renders both characters "God Mode Sues". Consequently, I also believe determining a clear victor in a hypothetical conflict is nigh-impossible given each characters' propensity for deus ex machinas and plot-induced abilities (or lack thereof). And yes, I am aware these forums and other forums like this make use of feats to establish proof.
The quote provided by the sourcebook is contestable. We could say it was most likely written as an RPG element, but we don't know for certain; the passage could have been far more specific in that regard. I used it to illustrate Palpatine's ambiguous nature (like that needs any further evidence anyway) and indeterminate level of power. For all we know, Sidious could also travel through time with his Force storms given what transpired with Darth Rivan, or artificially augmented the level of midichlorians in his clone bodies to achieve a greater connection to the Force--although I do not wish to contest these things at the current time as they are mere conjecture.
As a matter of fact, most things appearing in one source have been mentioned by another, so there wouldn't be much of a problem with that line of thought. And it's rather hard to believe that a database lacks... The statistics for it (in 2006) were: * Sources: 1,180 * Images: 9,503 * Characters: 8,742 * Planets: 3,419 * Aliens: 756 * Creatures: 1,255 * Vehicles: 2,716 * Weapons: 1,130 * Groups: 1,641 That are more than 20000 articles where Wookipedia, I give you that, has four times as much, which includes many one liners just referencing another article.
We don't know the amount of detail that goes into these entries, however. There has to be some reason why the continuity buffs that write the essential guides would seek knowledge from Wookieepedia.
Wrong. There wasn't something like "Sadow's holocron". Sadow left some knowledge in Adas holocron which remained in Sith space (on Ashas Rae more specifically) when Sadow escaped to Yavin 4. Sadow did continue his experiments in Sith Alchemy while exiled, apparently for decades or possible even centuries, with all additional knowledge he gained there not being stored in the holocron.
I'm afraid you are the one that is incorrect. Naga Sadow did create his own holocron, and it is first mentioned in Jedi vs. Sith: The Essential Guide to the Force. Palpatine owns it.