Combined seasons 2016-2019 Powerplay Stats
OV......177GP, 703.8TOI, 39G+27A=66Pts,
Patty...169GP, 491.6TOI, 35G+17A=52Pts,
Shooting volume and accuracy
OV......235SOG, 16.6S%, 484STA, 48.6SThru%, 0.081G/SA, 12.45SA/G, 6.03SOG/G
Patty...154SOG, 22.7S%, 292TSA, 52.7SThru%, 0.120G/SA, 8.34SA/G, 4.40SOG/G
Time needed in points production
OV......3.98TOI/GP, 18.05TOI/G, 26.07TOI/A, 10.67TOI/Pt,
Patty...2.91TOI/GP, 14.05TOI/G, 28.92TOI/A, 9.45TOI/Pt,
OV have 43.17% more PP TOI than Patty. If assuming same PP TOI for Patty and extrapolating his stats linearly using his production stats, we get:
Patty...50G+24A=74Pts, 220SOG, 418TSA
If assuming OV's shooting volume (235SOG) for Patty, and extrapolating his points production using his current shooting accuracy, we get: Patty...53G
If OV would've have Patty's TOI (69.8% of Ovi's), but assuming same accuracy and production rate as now, the intrapolation of his PP points score would look now like:
OV......27G+19A=46Pts
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Patrik Laine scores more PP goals with lesser time needed for a goal, using lesser amount of shots per goal i.e. having higher accuracy (S%), and missing net less often (STrhu%) when shooting. His rookie season cannot be considered particularly good PP scoring-wise.
OV is better in PP playmaking, and even if Laine would have same TOI he wouldn't still surpass OV's assists production.
Overall PP points scoring efficiency goes for Laine, by his considerably higher goal scoring rate: he needs on average 4 minutes less for a PP Goal than OV.
Edit: correction