First, I suggest that if you're having problems getting any part of the save-ee system to work, that you make a post in the support forum here on this board. We'd be glad to help you get everything sorted out so that you can play on both! (By the way, there's no reason you can't move your entire clan over too!
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As for a 2 barrack start, I suggest you check out Texas Ranger's post on one here:
viewtopic.php?f=62&t=1947&p=13328#p13109
The advantage of a 2 barrack start over a 3 barrack start is that it allows you to focus more on building up your economy at the start, since you're not spending the wood for the extra barrack, the food for the extra swords, and you don't need to mine the iron for the extra swords either. This basically gives you the opportunity to have a stronger boom (or more accurately, a
faster boom, which leads to a stronger economy at any point in time compared to a boom that is relatively slower) than a 3 barrack start allows. You absolutely do need expansionism to make a 2 barrack start worthwhile at an advanced to expert level of play (meaning you'll only see it on AoC), and the reason for this is that without expansionism a 3 barrack start will completely dominate you since to take full advantage of the 'extra' resources afforded you this start, you have to sacrifice 5 citizens very quickly to populate a settlement into a town center, which severely gimps you to the point that a 3 barrack start player is going to have basically the same economy as you in the short term, but they're going to have a lot more swords, and a lot faster, which makes you die every time they play properly by mercilessly attacking you and leveraging their large advantage in numbers. (Expansionism essentially allows you to offset this advantage enough to give you a fighting chance at survival, since it allows you to not sacrifice your citizens, get morale on all your towers, usually allows you to have 2 bars of morale in the range of a town center or two in addition to 4 bars in range of your capitol, and the obvious citizen production capacity as well as increased returns on resources that the gathering bonus applies to.)
Basically, there are trade offs to each approach (assuming we're talking AoC--if we're talking EEC then a 2 barrack start is just plain bad, and shouldn't work against someone good unless the person with the 2 barrack start is cheating significantly), a 3 barrack start leads to relatively faster sword production initially, but a relatively slower boom, and a 2 barrack start gives you the opposite. With two roughly equal players, one with a 2 barrack start versus one with a 3 barrack start (again speaking of AoC), the 3 barrack start is going to have a slight advantage in early game, which will shift to the person with the 2 barrack start somewhere around 12 to 20 f11, and will eventually end with both players on essentially equal footing (assuming one of them doesn't kill the other at some point in there, obviously).
