Note that celtic chariots don’t shoot in most ancient rules, they are close combat cavalry units (with javelins factored into close combat). Likely not as good as minotaur chariots (which are more like heavy knights), but heh it is fantasy. 
This is in contrast to Egyptian/Syrian chariots etc. which did rely on large amounts of good archery.
Scythed chariots on the other hand would be more like a Goblin Blaster. A one use expendable wrecking machine (that usually didn’t work historically).
1 Like