Darn it, forgot about blasted alloyed metals, btw, what on earth is mithril an alloy of? I spotted 300 'easy' and 'hard' units that require alloyed metals, so that will add 150 'easy' and 'hard' biped construction units (of the type that do not require alloyed metals). Dragons don't seem to have to deal with alloyed metals for that structure at least.
Seranthor, I'm going to have to believe TG over horizons.gamersinfo.net, but are the OTHER things they've listed on that site actually correct?
Now, to fix the requirements for the t4 guild hall, it's 126,750 + 150 * 2 * 15 + 150 * 2 * 20 = 137,250
For dragons it's still 236,600.
Now for bulk/rec for both....
T4 dragon hall = 28,800/236,600 = 0.1217
T4 guild hall = 18,750/137,250 = 0.1366
Sooo... bipeds get a slight edge, but a t4 dragon hall probably outdoes the guild hall in terms of looks. It seems like neither side is really getting the shaft here. If ssylva is reading this, both sides are about the same when it comes to resources vs bulk.