the sunderland held it's own on several instances. the only one i can think of off the top of my head is when some sunderland shot down at least 2 atacking enemy fighters. and i might be wrong on this point, but wasnt the H8K2 basically a structural knock-off of the sunderland? sure, they changed the guns around a bit, adding a 20mm and what not, but other than that, they're pretty close to the same, no?