1) a series of actions (in this case, attack and power attack) with equal delays will have no effect on how fast you visually see them in sequence.
2)playing in the best clan of panzar has simply zero effect on speed, however, if you were trying to talk about his skills, yes he is skillful and blocks 99% of PAs.
This player along with several others were punished by the studio because of using speed hack a few months ago,which was officially announced.
The hack is there, the player has a gray background, so it's possible that time to time he uses it.
After all, the consequences of using such hacks are next to nothing (a few days/weeks of ban) as studio does not want to lose any customer, therefore no one is afraid of using them.