The USA E-juice gives a bold and rich tobacco flavour which is on the more agressive side. USA isn’t as strong as the Desert Tobacco flavour but it’s up there. The sweetness isn’t as prominent as in the other tobacco flavours which is perfect if you are just coming from cigarettes and wanna try vaping. 
You can expect all tobacco flavours to taste a bit more sweet than real cigarettes because E-cigarettes doesn’t combust and therefore the “smoking” flavour is missing.