Git is backwards, sometimes

hg diff -r from -r to
svn diff -r from:to
git diff to..from
Let's say "from" is 1969 and "to" is 2010. I think normally I'd write the earlier thing on the left and the later thing on the right. It's a culture bias of our writing system that I assume.
If I run:
git diff 41af332c2c071d941a0aa90b963e4e499e6b16ed 730c38d1a5c7a35b23245c7f4acb03c292ea0c03
and 41… is earlier than 73… then pretty much what I expect happens. I get a forward diff.
But if I run:
git diff master mybranch
I get a reverse diff, which if applied would undo all the changes in mybranch. I have to run it backwards, `git diff mybranch master` in order to get a forward patch I could use to apply my changes. Why?
I can `svn diff ${repo}/trunk ${repo}/branches/mybranch` and get what I want.
I can `hg diff -r otherbranch -r mybranch` and get what I want.
git is backwards, but worse, it's backwards in this one seemingly random case. WTF.
I see git gaining popularity, and I see git sucking, and I hate that. I hate lousy technology winning. I hated that when it was Windows, or 386, or anything. Git sucks. Use Mercurial or Subversion.