Thanos wins with Cube/IG/HoTU. Thanos under his own power is way outclassed. Parralax only stands a chance if it's ZH Parallax.
IIRC Thanos and Parallax met in a crossover. This was Thanos under his own power and Parallax was not at his ZH power levels. This happened in The Hunger. Neither could damage each other. I know crossover don't count but I felt they had all Power levels and characters at the right level. Pheonix owned Darkseid, Darkseid owned surfer, ETC. It was right on. So - as for the fight Thanos with a device or weapon for the Win. Full Fed Galactus for the win without devices/weapons.
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If we're comparing the two and saying they're accurate, then why Surfer crushed Orion but was only just able to hold his own against Cyborg I have no idea.
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See, Parallax actually faced someone on his own level. Spectre. And he held his own for awhile. It's really just between him and the IG. I'm taking Parallax due to his restarting the universe and eliminating time trapper and various timelines. But the IG could also take it..........that is, if Thanos doesn't choke.
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