Hi Voodoo,
In regards to using rank-tracker...
a) Search Volume
To get adwords to match - under "number of searches" settings in preferences, when you choose "google" - choose "exact match"... this gives you [exact match search volume data].... cut and paste that data into a MS Excel sheet...
b) Competition
Also remember that you can not to pull exact match competition data at the same moment in ranktracker (as by using keyword phrase not using quotes - the competition data is always broad)
So if you want to get "exact match" competition data - you have to run a new project where the keyword is input into ranktracker kw list as "keyword phrase" (i.e. in quotes)... then only run collecting competition data (then cut and paste that into a MS Excel sheet.
In regards to the problem you have found with Google Adwords data...
As I understand, the google adwords figures (for exact) include natural organic traffic and adwords traffic... so using the data for organic ONLY (leads to some issues, sometimes i.e. you never know what % is organic verse paid traffic for the search volume etc.)
In regards to the fish pond problem in that thread...
If you look at the payout rate for the guys example per click - I suspect some guys have been targeting that keyword for adwords

...
i.e. my guess, is that it is an unusual case where traffic is 90% via PPC (and a small amount via natural searches)... namely adsense etc.
Either way, we all know that by design, Google Adwords data is not always accurate (your own keyword is suspect in that it shows LOCAL and WorldWide Volumes to be the same for that keyword!).
For rank-tracker - using data from sktools is not possible at the moment (as Linky has said) and apparently Google is about to delete the sktool altogether at the end of this month... so all you could do to test if adwords tool is way out for the numbers it gives out, is to use another "searches per month" tool...
e.g. wordtracker or another one offered in rank-tracker... or perhaps manually use MSN Adcenter data...
<-- basically this is not a rank-tracker problem (it is a google adwords data problem)... so the fix is use a "search volume" that you trust the data from more... I am not sure really there are too many are better as a general rule
You probably know this... point I am really making is I don't think your research is wasted (this is more an anonomly than what will happen for all keyword traffic estimates)...
Another test (apart from SKtool) can be to check google trends as well...
i.e.
http://www.google.com/trends?q=picture+mounts%2C+picture+mount%2C+photo+mount%2C+photo+mounts&ctab=0&geo=all&date=2010&sort=0.
Perhaps MSN / Bing Adcenter data is
also worth using - some say that is "Organic" search ONLY data i.e. not adwords included (but rank-tracker cannot auto do that) - lol....
See this article on MSN Adcenter data -
http://www.seomoz.org/blog/using-the-adcenter-excel-plugin-for-keyphrase-research ... for information on the MSN plugin I talked to you about
Note: it is ONLY organic results, unlike google tools which are organic + PPC (you need MS Excel 2007 version, to use the plugin shown in the SEOMoz post).
It is possible however without the MS Excel Plugin... to get the searches per month data and CTR% for each kw (only for English-UK, English-USA, English-Canada, English-Singapore, French-Canada or French-France)... and export this to an MS Excel sheet
i.e. That data is available without using MS Excel 2007 plugin...
NB: You can choose English-UK data, using the MS Adcenter website page (export that to MS Excel and compare to Google)...
Remember if MS / Bing has 5% share of SE market... and Google 95% share... then a 2650 per month result for Bing = Google 2650 x (.95/.05) = 50350 approximately (assuming google gets the same ratio of searches, as Bing does and if G has indeed 95% share)...
<-- SEOMoz uses a different formula - which is more sound mathmatically (as based on tests)... i.e. GoogleData = 81*(MS Adcenter Monthly Search)^0.8 e.g. Google = 81*2650^0.8= 89135.02 per month.... (note this for one term I checked - Google estimated it at around 135,000)...
So MS estimate is lower than Google Adwords... but still obviously not a useless kw

I suspect those kw you had a problem would show up as useless (low volume) using MS Word as a 2nd guide to search volume

Lastly, remember that kw research is NEVER 100% accurate - it is "relative" science... but correlating MS (alias Bing) keyword research (or other sources) to Google Adwords data can highlight those kw which have potentially suspect Google Adwords data...
Hope comments help - cheers, Andrew