Dave,
How accurate do you find that thing? I have it, and I have tried some of the speeds listed and I never seem to get the same results, and I do trim out the aircrat. Some of the Japanese planes seem to go faster that he lists, and some other planes seem to go slower.
I am not that good to get close to quoted figures so I only use it as rough comparison e.g.
my plane can climb faster so I can use this to escape
or my plane can turn quickly so its ok to try this
as I usually find out when engaging- its the pilot that really counts and you shouldnt really get involved in hard turning fights as it blows your energy and leaves you vulnerable to the bandits mates. This utility will only give us a good idea of how best to use your plane against common enemies- but shouldnt make you forget the basics of SAS=SPEED -ALTITUDE-SURPRISE
I read on the UBI ZOO of guys who keep it minimised so that when they go into dogfights or co-ops servers with rotating plane sets they can quickly reference this to help.