The mechanics in this game are weird...but thas what makes them so fun!
Your situation is about speed and targettin' priorities.
There's two situations: whether there was a trap/abati in place or not.
If there was not a trap/abati, then the range would start equal to the ATs range and your entire army would be included.
The ATs would shoot down the archers first, havin' the highest range. Then the ponies, then the scouts, then the warriors.
Your scouts and ponies might have time to do some damage, but not likely enough to finish them. That would be based upon techs/hero lvl.
If there was a trap/abati on the field (which is what I think you meant) then the range would be at 5k.
The first round, the scouts would insta to the ATs and get shot to pieces. After that the ponies woudl get in range and...get shot to pieces.
Then the archers would get in range and get to shot to pieces before they were at range to shoot back...then the warriors woudl arrive last and get shot to pieces.
Ofc, these are w/ yoru numbes. If there were more than 100 archers, then they would survive long enough to get into their own fire range and shoot back, but unless you had around 3k of them they wouldn't be killin' the ATs..althought it would give the warriors time to advance, but inevitably they'd still get wiped.
The ponies wouldn't be able to close in fast enough in those numbers. Same as the archers; if there were more to tank the arrows then they could and would even get some damage in. But with arbitrary numbers there's not too much I can do in the way of specifics.
Also note that the walls have to be fully destroyed, not jus' 10%. They jus' fully and instantly regen after the fight.
Make any more sense or did I jus' cloud it up even more?

