Firstly, I'd like to say if you won the game you at least played better than your opponent in some form. Arcturus definitely played poorer because taking the Ant FTB with 3 3v2 attacks is just so silly and needless risking to do. It deserved that 13v8 income disadvantage and lose the game.
Secondly, I think you should've covered the FTB as Arcturus did. If Arcturus was smarter he'd have taking FTB and then smash into South America while going to SEA border for turn 2. Most times this will lead to sufficient advantage and win games in most scenarios. You lose 9/10 times with most picksets.
Thirdly, I think you could pick/play better. 1. For not covering FTB and/or picking counter strategy to FTB. 2. Picking North Africa is inefficient as it's a 3 bonus for 5 territories. 3. So many 3v2 attacks, you got very lucky but this won't be happening every game. 4v2 is best for long-term success although if you want to risk it for a biscuit, keep doing what your doing :P