I opened up the editor and checked it out, basically it has a range of 850, but only against buildings. So you could come by a base and take out its structures from afar, but you're gonna have to come close to get at its units, this is just a weird situation. I wouldn't give anything flying a range of over 450 even if it meant you had to upgrade it because the thing would be abused, as far as those airships in Arkain, from what I understand they have a huge (~12) food cost and therefore cannot be spammed, also even with medium armor an airship with just 1000 hp can easily be taken down, however if it outranges the defenders this can be a problem, A good counter would be to mass flying machines, gargoyles, or hippographs. In fact gargoyles or hippographs will be more effective against these because normal damage does 1.5x damage to medium armor