The thing is, although Jason is also hard on Roxanne, he gives her constructive criticism and does praise her on things she gets right.
Ruthie on the other hand just scores on how much the person does it for her.
She has already shouted out loud and clear that Zoe does it for her even when she almost falls over and flaps her arms whilst going round and round to stop herself falling over.
She is the worst judge on the programme and gets 0.5 from me. Hope they get rid of her before next year.