well, i flew the frank earlier this afternoon, racked up some kills.
a spit5 will eat it for lunch. it's not all that fast as some have mentioned (i'll still take it over a niki any day - the guns are nice).
it gets pretty slushy at higher speeds. the rollrate at any speed is nothing remarkable. it climbs very nice, has decent acceleration, especially downhill (which isn't always a good thing, but great for low level turn fights).
i'd put the frank somewhere around the niki/spit9 level of performance, but better than the tony. nothing remarkable. it'll be a middle of the road ride in the MA.
frankly (heh) i'm a little disappointed overall, it's a nice ride but not a "wow" ride, but who knows, it may get tweaked further. i was expecting something faster - some have made reference to this being modeled on a prototype, as opposed to production which had a better engine.
it'll be a nice complement to the CT. it'll be interesting to see how it does vs the cats and hogs, as well as the other allied rides. (we need more army-based CT pac setups).
there are also a few good writeups/info in the KI-84 speed?? thread at the top of page 3