Based on my experience Samsung is a lot slower. In fact Samsung has just released it Android Pie update to its flagships which is more than 4 months after Huawei has released Android Pie on its Mate 20 series.
Previously had the P9, Mate 10 and now Mate 20 Pro and so far Huawei has been more regular with its updates something I didn't experience with so many Samsung flagships before.
Try using vpn and set it to country of purchase and try... you might get lucky... i purchased from India and i set my VPN in Australia and received the update... As compared to UAE, mine was 735 mb or something which indicates in changelog that it is a stable update from beta version.
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