More Regarding Professor Wilson
Wilson's book is in a library miles away. I believe he simply wrote that comparison is "interesting" and both plays have tragical and comical elements. He also wrote that he found Shakespeare's sympathies were no less for Shylock than "the spitting Antonio." Perhaps this opinion is more likely if R&J is fresh in the mind of the reader. For example, Romeo's "The time and my intents are savage wild, / More fierce and more inexorable far / Than empty tigers or the roaring sea"(ROM5.3.37-9) clearly corresponds to lines from Antonio and Gratiano in Act 4, scene 1 of MV.
More linguistic connections
In the first scene of MV we find: "I pray you, good Bassanio, let me know it, / And if it stand as you yourself still do, / Within the eye of honor, be assured / My purse, my person, my extremest means / Lie all unlocked to your occasions." Therefore, Antonio is much concerned with the concept of "honor," as was Tybalt: "Now, by the stock and honor of my kin, / To strike him dead I hold it not a sin"(ROM1.5.60-1). Capulet responds to his nephew: "Why, how now, kinsman? "Wherefore storm you so?" In Act one, scene 3 of MV we have: "Why look you, how you storm!" We may then infer various things.