which is better and why?
It's Magna Mundi (which doesn't make sense in Latin, anyway). I would go with MM it offers much more, it's also free!
BLM - ANTIFA - A.C.A.B. - ANARCHY - ANTI-NATIONALISM
They need to update it for divine wind
Magna Mundi. I haven't even played Divine Wind but I know MM would still beat the tar out of it. Why? it's like the difference between a more complete and a less complete game. MM adds depth, challenge, interesting stuff... it's still got its glaring flaws but those are leftovers from vanilla and can't be fixed with a mere mod, which is why they are making MM into a game. Vanilla on the other hand pretty much is a glaring flaw, if it wasn't for MM I wouldn't have played EU3 for more than a week (none too pleased with the experience might I add).
By ubik's word the most balanced version is MM2 which doesn't use the HttT expansion while MMU does but isn't as balanced. Personally I think MMU > MM2 because there's more content.
If you're looking for the baseline, MM is a grand strategy game whereas vanilla is risk with toys.
There's a lot of content that's for sure, but see divine wind has that cool map similar to victoria 2 which I cannot do without. Damn victoria ruined old paradox games for me T_T
Except hoi2, somehow it still manages to look decent