Folks, unless comparing 3g to 3g, or 4g to 4g, not a good comparison.
If comparing 4g to 4g, but both not ICS, not a good comparison.
If you are in known weak areas and you compare if holds signal or not, good comparison.
If you are in any area and one device works and the other does not, good comparison.
The results here and other places combined so far are all over the place, so no real sense of trend yet. Of course, the real thing that matters is your own results. Friendly advice: If in doubt and not happy with signal, it is likely not to improve much if any, so "hoping" will not make it better.
Samsung historically for some reason SUCKS with antenna design and coupling that with the radio chip as a strong series system. Does the GS3 suck as well? Not sure in either direction yet, but the fact that results are varied so far and Samsung's awful history as well, not the best of trends.
Please keep testing and I look forward to joining next week
...... I hope I still have a smile face next week... My Razr since the ICS update has become a battery sucking demon and has to go. 4G mode went from bad to criminally awful. Nice smooth OS, but 4G is unusable for me now, unless near a power socket. Games and Flash run a lot hotter too. I should not have to deal with this with a stock device, so will bail from the Razr.
The GS3 was supposed to be my parachute!