Nonono
I'd say sOAZ pentakill was the result of far more skill from the top laner, tbh
When balls made the pentakill, it was a situation where C9 had the advantage on re-engage with some Fnatic members being yet lower on health because of a very aggressive engage on C9 backline (Reignover, Huni and Febiven on the backline from previous damage), and it was mainly Azir incarnation ulti that set up the penta as it grouped up FNC player against the wall, also separating Yellow's Alistair (who would have had the tools to keep Darius on check) from the rest of the team, costing him his life as he flashed ulti when he was yet at low health to make the play. Also, Darius was ignored (and I'd say also disrepsected by FNC players) for the entire fight until the point he could actually come in and clean up from almost 100% health with the ulti reset
It is not casual that casters were actually praising incarant0n for the play more than Balls
in sOAZ penta instead FW was not grouped, and FW had the health advantage as OG was taking baron. Also, darius was focused from the start with Jinx ulit, Karsa focusing him, then Morgana ulting him and he needing to escape fromt that and Jinx damage with Steak that was coming from behind, and he had to time much much better his Q heal to survive the whole fight, as he was very low before killing Steak, NL and swordArt. - especially when he was so low that could not use ulti to finish the enemy but he had to speed up ulti use vs Steak given that he was forced to ult-Q to actually kill Steak and survive and meanwhile was able to hit also swordArt with Q too for the exta kill and extra health to finish NL'S Jinx -. Actually, sOAZ made a huge play on Karsa engage to set up the fight as he apprehend him to put him on Niels damage range while he was going towards Amazing and peke together with Steak (that was the reason why Steak seemed like separate from the rest of the team for the entire fight)
The only "help" he received was Mithy headbutting Maple to make him arrive later to deal damage, and then when Maple went for Niels and Mithy, sOAZ stepped up to kill Maple and and save both of them that were really close to dying, and Amazing ulti that separated Steak from Darius that was turning toward Morgana and Jinx buying some more time for darius to deal damage and reset, and even then swordArt had a perfect Zhonya and forced sOAZ to do the abovementioned ult->Q play on Steak and the same swordArt to survive after escaping Morg ulti leash and Jinx damage
And the end result of the play was all five members of Origen alive, instead of 3 C9 members alive in Balls pentakill
SO, sOAZ penta > Balls penta from top laner skills standpoint. Both were amazing playes, eh, but sOAZ has to take more credits for his play