The Dacians: Rome\'s Greatest Enemy?

[Robert Vermaat]

Well, archaeology clearly show that Santana de Mures-Cerneakov culture, which everyone consider is the Goths culture, is in large part of Dacian origin.

No it doesn't. That's opinion, and unless you can show me differently, I think that it's the opinion of Rumanian archaeologists only, by no means mainstream.
Your 'spread of Dacian artefacts' gives a nice map, but as any archaeologist can tell, the spread is not showing a cultural map, but a spread of objects, like any map of objects would show. How about trade? I can show you similar maps that show that Romans lived in Poland too, yes even in Scandinavia and India. This tells us nothing about where people lived, only where objects were found.
Finally, the 'Goths=Getae' discussion is old and done. You have, I repeat, not brought any evidence for a Dacian component among the Goths other than the similarity of the words and the apparent confusion among later writers. But then the Franks were also really Celts (because that's how Byzantine sources address them), and the Scythians are really the people behind the Sarmatians and even the Dacians themselves. That's or the Dacians spoke Germanic from the start.