Ok, talking about WW performance.
250,000 units are absolutely the worst scenario, and i would be pretty shocked if in the end it sells so low.
If UK is 1% of all sales, the worst Nintendo market, is logical to think the rest of the world is better than this. Let's forget Japan, since is of course a different market (which account for >12% of FIFA sales)...
Markets like Spain, Germany, Italy should easy have better than a 3% of overall sales. France is the best Nintendo market in Europe so there we are probabily looking at 5% at worst.
The America, which is not a big market for FIFA but it still matter, and like France we can easy see 5% or more.
Now, FIFA usually sells in the 15-20 million units lifetime. Just for have a possible scenario:
1% of all sales = 150,000-200,000
2% = 300,000-400,000
3% = 450,000-600,000
4% = 600,000-800,000
5% = 750,000-1,000,000
ecc
I woul say 1 million is very likely all thing considering. I believe 700/800K looks a realistic prediction, and i think EA will be happy with that.