Just found the sweet spot, its not where you think it is, its at the back of the horse, towards the start of the swing. Once you find it, the class becomes pretty effective..
Just got this on EU1, 20-4 with only about 4 of those kills being on the ground playing as inf.
I don't think it needs a buff anymore, its hard to get right but thats what i like about it, something that not everyone would want and can use.