Some gen'd ones that are fairly spot-on have made it through, while really out-of-the-park ones (i.e. Manaphy caught on Route 1 with Masterball) don't.
Source: I gen'd a Tornadus since nobody I knew had one, and I had to get Landorus. He went through. --- Steph of the Electric Safari. 3DS FC: 0602-6270-8466, TSV is 2302 Pikachu, Electrode, and Luxio? Shocking!!
The hack check is a complete joke XD. It's hilarious! I mean I happily got my legit shiny pokemon through but I also got through all the legends (since my heartgold broke and all my legends were on it :( ). I've gotten all of my hacked pokemon through (I don't competitive play so not a big deal) but it's kind of sad really XD --- Mii name: azul360. Friend Code: 4270-1775-5750.Friend Safari: Ivysaur, Tangella, Gogoat. Other 3DS: Shay 1220-7953-5382. Ground: Camerupt, Sandshrew, third?