The UA for Greece is totally irrelevent when you can just conquer the entire world with 4 companion cavalry. How can you compare anything to that? It's a joke.
Complain noted, doesn't change the fact that your complaints that the expansion civs have better UAs than the vanilla civs are pure bullcrap.
Which is what we were discussing, in case you'd forgotten.
Japan's ability is the equivalent of a +20% promotion for unit that's at 6/10 HP, and worth even less for a unit with less damage. That's barely even noticeable- it's one of the weakest abilities in the game, at least for a human player. The companion cavalry get's almost a 20% boost in BASE STRENGTH, which get's increased even more by any bonuses they get (and they get a lot!). The extra move is also incredibly powerful.
So...why are you comparing UAs to the CC? It doesn't really make much sense. We all know CC are powerful to the point of being broken, it doesn't mean other traits can't be good. As a warmonger trait, the only better one (than Bushido) is arguably Art of War.
Is it really that hard to release a patch that changes horseman? Surely it doesn't take that long to change a few numbers in the XML.
Make your own mod then, or send Firaxis an email.
I'm not getting into the 'Firaxis priorities' argument again, it never goes anywhere.
But if they really want to release Mongolia without changing the base mounted units, they should have done so very carefully. Adding any sort of bonus on what are already the strongest units is dangerous. I think that the +1 move ability, by ITSELF, would already make their mounted units dominant. Adding other stuff on top of that is just their attempt to make people interested by making the "new" civ extra powerful.
It's free. If they released a new civ with a $5 price tag that was blatantly overpowered, I'd agree, but this is free. Thus, your conspiracy theory (and really, it is one) doesn't really make any sense.
Once mounted gets nerfed (and it probably eventually will) the Mongols should be pretty well balanced.
Yeah it's not as if any other civ can make an entire army of mounted units... oh wait they all can.

I meant in terms of their having a mounted ranged unit and effectively a mounted GG, obviously (which I flat out say), but keep twisting my words if you enjoy it.