This is the first time I've seen anyone on this forum say that liking an I4 puts you in a minority.
bigpoppa, you're asking about how they pull at different speeds but the difference has little to do with that. It's different pull at different RPM. Generally the only difference is to get the same torque (pull) out of an I4 you rev it higher. If you're handy with the clutch it makes almost no difference in acceleration but some people don't like riding at high RPM or revving it up from a standstill. It can also be riskier for a newbie if they need to wind it up a lot to get good pull as there becomes a finer line between being revved up high enough for good acceleration and being revved up too high so you drop the clutch and accidentally wheelie into a tree or loop it. I guess once you get near the top speed of the bike then the question of which pulls better at different speeds comes into play but that's generally related to peak HP.
Also, since the FZ6R is targeted towards beginners, it doesn't have nearly the same high RPM power "hit" as a supersport although it's likely tuned for more low end torque.