Hi Carlos - I agree it's a bit confusing to see 2 different options that lead you to the same download. I raised this internally with our Product Management team; the short answer is that this is due to the way we license our various products and codes they use behind-the-scenes. We realize this could probably be presented in a "cleaner" fashion and something we'll look at in the future.
Regards,
Erik Bresnihan
Manager, CA Technologies Support