I am not suprised when a average player do the same as a veteran, also. Civ 5 is much easier, since the advisors are telling you much more what to do and when to do it. If you know a little how to manouvre your units in good positions; your half way there.This simply means that you have become a good civ player, and you know what it takes to develop good strategies quickly to win Civ. V is not so much different than IV that you would have to start completely fresh developing strategies. In order for this to be true, V would have to be 100% different in every single way from IV, and it's not. I'm not surprised it took civ veterans not very long to learn the best way to win.
Cities come with instant defence, barbarian crushing your precious city is impossible now. Again: simplicity and less dangerous in CIV 5. You must also be very stupid to loose ONE single unit to the barbs (beside scouts and settlers), while you get EXACT notice what damage is done and recieved; it is quite aqurate also. Again: dumbed down.
What really makes me sick is that te AI is just as stupid as 10 years back, SOD or no SOD; it makes no difference. In offence, the AI sucks and actually; in defence too: it the AI is very predictable in his actions. Atleast; with SOD you could run into some suprises. Not with 1upt CIV 5. Anyway, i was hoping to see some progression in the AI's behavior and seeing it ain't any better then 10 years ago, makes me sad. It's just disquised in another jacket.