Well yes but for Entei, Raikou, and Suicune it's goes against your starter. So if you picked Blastiose you will get Raikou. As for Deoxys it's still an event which means you can't get it. Oh I just looked this up lol Lugia and Ho-Oh are also events.
Yeah, it says there that you can, and I have all of them on my copy, so yeah :3