Hey!
If the question is TH or SG then I think to SG has larger chance on a game.
Yesterrday a would to try out(test) the cata&bala in the remake. I made a little map, wrote a script, and start the game.

bala-cata couldnt download into the game. But i didnt give up and start a mission not under the remake. I made siegeworkshop and townhall too.
I was really couriuos on cata-bala because i used them once before when i tried out. (Well. The remake is really nice work, the feutures and the handling much much better than were!Great job!Keep it up!)
hm...cata&bala. I made a siege and just wow...i remember enough 5 ironbar to make one this kind of unit. but Still need another 5timber:O. okay i stopped all iron armory and weapon making.While im making wheeler units i built 2nd townhall too. I had 90 goldchests in the Storhouse...
Townhall really usefull and can product an army easily. And TH units are really good quality, sometimes better than the classical units. one goldchest one antihorse unit.what an option... I think TH is too strong with this kind of VALUES to the Remake.
But i think to worth considering on the Siegeworkshop. 5 iron bar 5 timber for the one of the slowest unit(s), what is dead after 4 hits(sometimes a serfs can hold out too 4-5 hits) and shots really rarely, and the making time is seems longer. Hard to handling them. They need good quality defender units(mellees). But if create mass wheeler units then cant(?) create mass meele. which will you chose? 2 ballista or 5 milities & 5xbows?
-'One shot one kill'?- yes, sometimes also the Xbow can do it. Just Xbow can shot faster.
-maybe the catapults are good next to your towers to defend, or deep inside your city, but not on the frontline(?)...
-catapult cant kill always one shot, but sometimes can kill 3...i think catapult is better than ballist and tower.
-and one question-can the catapult kill own units??:)
glad!
t
PS: TH and his units really unbalanced. Prices, hitting points.....
SG units has bad imo(?) ... i dont think.
Possible tests could help...