I'm shocked Tosser's conversion rate's 60%, from all the sitters he's missed would've thought closer to 40%.
Well, there is an even more nuanced reading:
Given that no sitter is worth 1 xG or even above 0.8, but is usually above 0.4 xG (A pen is around 0.75 xG), we can reformulate.
If Ferran has 60% conversion rate with reference to xG of 1(which never happens in real football),
then he has 45% conversion rate with reference to an xG of 0.75 (what a pen has, and is much more than a sitter in real football)
and if we want to make it even more realistic:
he has 30% conversion rate with reference to an xG of 0.5 (A proto-typical SITTER in real football is worth just that)
So, your hunch might be correct:
he puts in roughly 3 out of 10 real-football sitters he gets each game
Same re-formulation would have Vlahovic at around 70% conversion rate (much more realistic) with reference to xG of 0.5
which means he puts in 7 out of 10 sitters he gets