This game had me quite impressed at first. The sheer number of units that could be created can excite anyone. In the end however, it just got repeptitve and all around boring.
Yes, the game is more realistic than many other games. Cannons and ships move alot slower as they would in the real world. However, it just takes too long to be of any fun. Waiting an hour for a ship or a cannon to reach a skirmish was more time than I wanted to spend on the entire match. At the same time, the game is unrealistic as well. Killing 100+ units with one shot of a cannon is a bit much if you ask me.
And yes, guns were inacurate back then, but you need to draw the line somewhere. A couple of indians with bown and arrows shouldn't be able to take down an entire cavalry of trained soldiers, and an indian longboat (again, using arrows) shouldn't be able to take down a battleship.
There are a few AI issues as well, which would take to much time to go into. If you like long drawn out battles, as well as long matches, you might enjoy this game, but it's just not for me.