I am a DM player, and a Hittite one at that, so I know from first expierence of how cho is a match for hittite, Im not saying cho is stronger that hittite, but that it is one of the few civs which stand a chance vs them in DM.
:scythes beat on legions...
hahha nope, cho legions rip up scythes bad, its only till you get unit battles of 30 vs 30 and greater that the scythes begin to win.... and usualy their are more legions than scythes in the battle because legions train faster, and are smaller, so more fit in a given area
hittite, HHA, and AE are the answer to cho legions.... but not scythes
priests do die to HHAs, and scythes, but for the most part they own cats, due to martrydom. cho priests also rip up AEs
Towers do die to cats... but not as bad as cats take down other towers, you would be surprised how far the +2 range can be some times.
those +2 range towers are also great at hiding cho priests, since the towers rip up scythes and HAs.
things can be turned the other way around
how choson beats hittite:
Cats? legions/priests
Towers? legions
HHAs? Towers
Scythes? towers/legions
AE? priests
Cents? priests/towers
As to why rome can not stand up to Hittite in DM, all romes siege, and legions are owned by Hittites cats, with out the choson hp bonus, legions get flattened on route to the cats. This leaves their only usefull unit agaist Hittite cats being the scythe chariot... which in turn is owned by all of Hittites other powerfull units(towers, HHAs, EAs, Cents)
For sumar, just compare their tech trees, you will see sumar is inferior in every usefull aspect.
Catapults - pretty even battle here. Sumars do better vs buildings, and most melee troops, while Hits do better vs cats. Note, if your opponent manages to get melee troops into a pack of sumarian cats, they will destroy each other with friendly fire 3x as fast as Hittites do, since they have half the hps, and 1.5 the fire rate.
Eles - Win for Hittite, Sumar does not get AEs
Towers - win for Hittite, Sumars have one less range
Scythes - Win for Hittite, Sumar does not get metalergy
Cents - Win for Hittite, no metalergy or iron/tower shields for sumar.
HHAs - Win for Hittite, Compared to Hits, Sumars have -1 damage, and -1 range.
EAs - win for Hit... not that they are used often, but sumar does not get em
Economy - win for Hittite. Sumar may have 40 hp villies, and double output farms....but those don't make up for the lack of both craftsmanship and coinage, which is probably the most important tech for DM.
Boats - depends on map... but to be nice will give it to sumar. FGs and 13 range galleys (hit) is a close counter for 9 range triremes and FGs. Smaller maps will give the advantage to Hits, and larger to Sumar...... but then again we are talking land maps here, so who cares about boats.
Priests - win for sumar.... but they still miss to many techs to make them decent, ....when was the last time you saw sumar priests.
swordsmen - win for sumar..... sumar has the dreaded longswordsmen you better run for the hills now.
so the only techs/units that sumar has the advantage... is in units that they won't use 95+ % of the time in DM