barching for 50% in champion

is this really possible?

or maybe in master 1?

It's very common, Vlad in Lunar Rising is BArching at 4k and up

Absolutely, I went up to 4100 using all arch, its great for farming around 3300.

It is very possible.

It really shouldn't be though.

If your hunting more than 1 star then I suggest:
2 hounds
30 minions
20 balloons
20 archers
I have had good 2 staring with this...