I don't think that's necessarily true - they serve a different purpose and work differently but their standards actually aren't that different. In the UK there's no requirement that counsellors or therapists be registered anywhere so there are a number of different professional bodies who all register and accredit therapists but I'm not sure any one is better than the other. I think where a T registers says more about them politically and organisationally than anything about the actual body. Most places employing therapists want BACP accreditation as a minimum requirement so it's pretty industry standard.

As s student I would go for BACP, their requirements are clear and well understood across the sector and you'll be more employable more quickly. Also student membership is really cheap, about £70 per year and is worth having in terms of access to research and placement information.