Nineteenth century skepticism

Beginning in the 19th century, some German biblical scholars began to question the traditional attribution of this letter to Paul.  The vocabulary and phraseology used in these pastoral letters were often at variance with that of the other Pauline epistles.  Over 1/3 of the vocabulary in these three letters was not used anywhere else in the Pauline epistles, and over 1/5 is not used anywhere else in the New Testament.  At the same time, 2/3 of this non-Pauline vocabulary was used by second century Christian writers.  However, it can be argued that there are similarities between 1 Timothy and 1 Corinthians, between Titus and the other travel letters, and between 2 Timothy and Philippians.  How important is vocabulary to you?