I'm criticial of all the judges - and in a minority in believing Arlene to the best of them over the last series or so - but as a group I'm going to defend them here.
For all the inconsistency, the comments not matching the scores, the confused messages over which judge is focussing on which aspect of the dance...for all that, they do usually get the couples in pretty much the right order. And with the current scoring system I don't think that's anything like as easy as some people make out.
It would be preferable if the judges a) were amore self-consistent and b) gave sensible and appropriate comments rather than rehearsed sound-bites and c) made it clearer what they're each looking for...but it's an entertainment show not a deadly serious competition. The voters will usually screw things up in any event.
I think it's pointless getting bogged down in technicalities anyway. TV viewers don't even get a particularly good view of the footwork. I know what I like and I'm not unduly influenced by the judges or anyone else. There's something quite ugly to me about Letitia's dancing, for example, and no amount of praise or hype will change that.