I believe that is correct. The meaning of point is often ambiguous, and ambiguity is usually bad. Some people mean 1.0 (a handle), and some people mean 0.01 (a basis point). I think the term car, denoting a contract, comes from the fact that most ag contracts fill one [train] carload.
SPX is the S&P CASH index, and 100 handles lower is indeed 1311.63. SP or ES is the tradeable index and closed @1422.20/1422.50 respectively, just to further confuse you!
ES is the E mini, SP is the larger brethren, right? ...this is what happens when you spend too much time trading options and not enough futures