I don't see what's the point on debating about this. The swedes definitely broke the rule and used Swi on mainclass while he was only allowed to play medic, no matter what the result was. You can't take GC as an example anyway due to its short duration. Judging by the logs Swi pretty much carried and honestly I don't think whoever their main scout is would have performed as good as a prem player.
You argue that is questionable that they lost the GC and that they lost the other map but at the same time ignore the fact that they tied despite the enemy team having Swi on scout. Judging by your same logic, then it is questionable to think that the swedes would have managed to tie on granary had they stayed on their classes.
fair result imo
Air_you're allowed to have a sub that is allowed to play one class but not another?
this is done to prevent premiership players subbing in lower divs with their main classes, as it is not fair competition if for example you play open and you just started and then have to play vs kaidus on demo for example.