That is clearly not a pick. It is quite obvious to anyone with any sense at all that you are not a picker at all, you are an altitude monkey! People need to get their terms straight! 
my understanding of a "pick" was/is that the "picker" comes in high over the fight, and simply waits for someone low in the furball, to make a mistake, or to wander out of the furball, drops, shoots, and goes back up high to await the next mistake.
if no one makes this mistake for him, then he picks one that seems to be fixated on his target, and blasts through the furball, guns blazing....again returning to the relative safety of his perch.
i almost want to call it the same if you're dropping in on a 1-1 fight, although that is more of "clearing a countrymans six", depending on the situation. i always ask my countryman if he needs/wants help before going into their fight.
now, all that being said, i DO realize that if/when i get picked, it's my own fault. it is also very difficult to keep an eye on those pickers when you're in a furball, and already trying to track multiple cons(which i suck at so far). it's a bit easier when you're in a 1-1, though.
as for those screenshots.......whelp..defi
nitly not a pick......more of a boom n zoom tactic it looks like. and yes, it appears as it was their own fault for not looking 'round. i only WISH i could hit something while doing over 500mph. but then, i tend to not fly the planes that go that fast.