Well, I have zero interest in warriors but I can tell you that Paladin stats match up within 1% or so. The armory I copied had one piece of Ulduar gear which isnt in my Database (overlooked it when I started) but stats seem pretty much accurate. The slight diff I noticed *may* be accounted for just by the client I run 3.0.9 vs retail 3.1.something. I honestly do not know, I only did this to see if there was any glaring discrepancy between stats on retail vs MaNGOS and I did not see it.
HP was slightly off (29004 vs 28604, of which 16 STA worth of HP (182.4 HP for Pally w/ talents) is due to the bracer being diff)) but it could easily have been my error or the diff client. Either way, nothing major or game breaking.
Armor was of course higher on my server because the bonus armor from the cloak I used does not seem to be calculated properly and may be getting added 2x, once by MaNGOS and once by UDB (Thank you nos4r2zod for figuring that out). This may be worth looking into more since Brutal Gladiator/Gladiator/General's PvP gear carries hefty amounts of bonus armor but tbh, doing so is way beyond my skills (or lack thereof).
Anyway...if you wish to go into more detail with a warrior, you are welcome to. Honestly, I am glad you made this thread, I always wanted to match up stats for a MaNGOS pally vs retail and just never had the motivation.