Peter Pan’s first appearance on stage came in J.M. Barrie’s original production in 1904, but the most recognizable version in 2014, the one against which “Peter Pan Live!” must undoubtedly compared, came in 1954 on Broadway. Mary Martin, who also starred in the original version of “Sound of Music” which NBC telecasted live last year, played the title role of “Peter Pan” with such enduring ability—she won the Tony that year—that few could really hope to match.