Like I said in the shoutbox MI, you were right
I opened our schemes in BTP's scheme editor, as to get a good visual of the crate distribution in the official TUS scheme. '30' in the above graphic corresponds to 3 crates(-probability) in WA. I added up all the 'crates' of each scheme and then calculated the percentages. They are not precise as I left both the air attacks and the superweaps out of the equation (I'm not entirely sure, but it may be so that in the official TUS scheme there are more superweaps as the total number of crates awarded to the regular weapons is smaller (805 compared to 950); in that case the %'s of TUS should be decreased by some 0.1%..). I still can't rule out any errors though, it's really hard to get an exact insight as to how the crates are distributed, but I think the table gives a pretty good indication.
To make things easier I added colours:
Dark-yellow: difference with other scheme is ca. 1% (0.5-1.5%)
Green: ca. 2%
Darkred: ca. 3%
Bright-red: ca. 4%
As you can see, the official TUS scheme is more heavy on the standard 'big' weaps like holies, cows, nana's & flamethrowers (as well, but to a smaller degree on semi-big weaps like dyna's, sheeps and ladies). HHC's scheme has quite a chunck more SD-weaps (you were right about that MI).. nearly twice as much to be precise. And there's also a small increase in smaller weapons (the guns & nades-line).
Yap.
It would be a good things to maybe point out to your opponent which scheme you are playing.
Or maybe we can work towards an official variant that takes the best out of both schemes ? (although I guess it's a matter of opinion).