I still don't think that the rockets of an aircraft would equal a crusiers broadside. A heavey cruiser would be armed with 8-10 8in guns with each shell weight around 300lbs depending on nationality, total broaside would thus average around 2,400lbs to 3,000lbs. A light cruiser would typical carry 12 6in guns with a shell weight of 150lbs or so. That would produce a broadside of roughly 1,200lbs (but a 6in gun fired considerably faster than an 8in making the 6in more attractive in a prolonged engagement). Anyway, a Tiffy's 8 rockets would only weigh 480lbs (unless the 60lb weight refers to only the warhead and not the entire rocket, I'm no sure). Anyway, a cruiser broadside seems to be a bit of a stretch to me.