Ftdna is not accurate at all, at least in my case. I am half Polish half Italian, with some distant Balkan ancestry. On ancestry DNA, I come up 60% eastern europe, 32% Italian, 5% Greek/Balkan, 2% Baltic, and 1% French. These seem to be very accurate results, even though I do not trust exact percentages. They make sense according to my family history.
Ftdna gave me 70% South Eastern Europe, 12% Eastern Europe, 10% Scandinavian, 5% West and Central Europe, including a few trace regions. First off, my South East European (which includes my Greco Italian and Balkan DNA, seems to be wayyyy over represented, with my Slavic coming at only 12 percent. How do I jump from 60% to 12%? In addition, none of my Polish/Slavic ancestry is from the Balkans, we are as far as we know North Slavs.
Then there is the 10% Scandinavian! My ancestry results show no Germanic influences. So how do I jump to Scandinavian of all things? And West Euro. The only thing I can think off is that their calculators overestimated the South Euro, and then messed up on the eastern European, instead labeling it as a conglomerate of North European and Balkan ancestry, which included the Slavic, Scnadinavian and Balkan. Maybe because I am a Slavic/Med. mix, my dna seemed to match Balkan populations like Croats or Serbs. If that is the case, they are only matching you to what you look most similar to in their data bases, and not what you really are.
If you want accurate autosomal results, ancestry is the way to go. They have more regions and are getting very specific. Their dna regions are getting more and more narrowed down. I still identify with Ancestry results, and not ftdna.