Current AW win = 50,000 points (this is same for both 2 BG and 3 BG alliances)
New AW win = 30,000 points
And more points for exploration. Now, the thing is that there is more to explore in 3 BG as compared to 2 BG.
Currently, for a 2BG alliance, if you win everything (as we do

) you can place in platinum 2. With the new scoring system, we will be lucky to place in platinum 3 and most likely will fall to platinum 4. For other 2 BG alliances, who win 50% of their matches, they are looking at Gold 1, plat 4 now even if they are in playing tier 1, 2 wars.
Just something to consider for 2 BG alliances.