The same strategy for pairs of threes and sevens also applies to two's.
Split the two's versus a dealer two through seven, and hit the two's versus a dealer eight or better.
We assume the dealer has a ten in the hole. If the dealer's total is 12 through 17, and we wind up with a 14, then we have a good chance of the dealer busting on the 12 through 16, and we have a good chance of outdrawing the dealer if she has a 17.
And if the dealer has an eight or better, the chances are really way in her favor, so we shouldn't put additional money in action.