Odin is enhanced by Gungnir, Galactus by Taa 2, Celestials by their armor, etc. The origins of power are irrelevant.
That being said, I wouldn't put Thanos at skyfather levels until we get a clearer understanding of the power ups he received after The End. During his all to short solo series he shoed some pretty impressive abilities, but his levels are still rather vague. He's certainly a top tier teambuster, boardering on low end skyfather.
It matters because Thanos does not always access, or have access to, his technology. We're not talking about origin. We're talking about an additional resource, something he occasionally employs to boost his power.
Just as Odin is not always absorbing the power of Asgard, Thanos is not always drawing upon his tech.