with asian handicap you have 50% on over 2.5 and 50% on over 3 and the asian handicap draw is treated as stake back,
so in the 2:1 score scenario 50%stake wins / 50%stake is a push = the 2:1 scoreline scenario US odds are -282 instead of -141
so win/draw = -114x-282 = 154.29$ profit
draw/draw = push