https://docs.google.com/spreadsheets/u/0/d/1brnrdw2xGulDkfu1sxcXWgLc45HS-GJTthFYKH03haU/htmlview#gid=0

Elven Lv10: +- 100 tier2 catapults + Only ranged troops (+ griffins if you can)
Elven Lv15: +- 320 tier3 catapults + Only Mounted troops (+ griffins if you can)
Elven Lv20: +- 800 tier4 catapults + Only Melee troops (+ griffins if you can)
Elven Lv25: +- 3200 tier5 catapults + Only Melee troops (+ griffins)
Elven Lv30: ??? tier6 catapults + Only Melee troops (+ griffins)

Cursed Lv20: +- 2200 tier4 catapults + Only Melee troops (+ griffins if you can)
Cursed Lv25: +- 7800 tier5 catapults + Only Melee troop

Notes:
– Use captains and artefacts that give bonuses to specific type of troops
– Halve or double the catapult amount if using a higher or lower tier than written (ex: 320 tier 3 = 640 tier 2)