Is he 'genetically gifted'? or did he work for his jumping ability? I imagine it's the former.. maybe i'm wrong though.
I usually get angry when genetic jumpers tell us non-genetic jumpers to "relax". For me it was quite the opposite.. to get higher, I had to get more angry. The act of jumping for me is very violent. As I got stronger (squat, plyos, work capacity), my relaxed warmup jumps got higher, but they were nowhere near my PR jumps.. I got to the point where I could do relaxed warmup dunks, they felt great.. but in order for me to achieve peak power, I had to start getting aggressive. If you've ever seen me journal about "hurting the ground", "pushing the earth down", "getting ampd", "psyching up" etc; that was an angry, aggressive mindset. I mean how many times have you seen me yell before or after a dunk? I'd even put my teeth together and almost 'growl' with my throat (with valsalva) many times before attempting my best jumps, similar to grinding out a heavy near maximal squat.
This is a good example of extreme anger dunking..
https://www.youtube.com/watch?v=xypWSL5YVEw ... I remember this session good. I was really amp'd up, had a bad day watching my grandpa, dad got home real late (had to wait for him to come home before I could leave my grandpa), got to the basketball gym (24 hour fitness) at 12:30 AM.. started dunking around 1 AM.. if you notice the clock on the wall, that's not PM, it's AM.. Anyway.. that's not relaxed jumping. That's violent-aggressive jumping.
So I guess my point is.. if being relaxed works for you, then great that's much better than having to amp up and go psycho to get every inch out.. This would most likely indicate you are HIGHLY reactive. If not, you're going to have to probably get really amp'd up to get every inch out of your jumps.. and it may only happen on a few jumps. Many of us equate jumping to shotput, except you're throwing your body:
https://www.youtube.com/watch?v=zvAlL20-K4wguy is yelling as he's throwing it.. just so intense.
just something to think about..
pc scoobs