EDIT: IT TURNS OUT ALL OF THIS MIGHT BE WRONG, LIQUIPEDIA DID NOT LIST THE TIEBREAK RULES FOR 4+ WAY TIES SO I ASSUMED THAT THE 3-WAY TIE RULES WOULD APPLY. ACCORDING TO THE RECENT POST ABOUT EMEA PLAYOFF SCENARIOS IT SEEMS THAT 4+ WAY TIES MIGHT BE JUST DECIDED BY OVERALL MAP/ROUND DIFFERENTIAL. LEAVING THESE POSTS UP JUST IN CASE.
LONG EXPLANATION + MATH INCOMING, FEEL FREE TO IGNORE!
the final standings for scenario 1 would be:
LOUD 8-1
C9 8-1 or 7-2
EG 5-4
NRG 5-4
SEN 4-5 (2-1 H2H)
100T 4-5 (2-1 H2H)
LEV 4-5 (1-2 H2H)
FUR 4-5 (1-2 H2H)
MIBR 3-6
KRU 0-9 or 1-8
this would be a 4-way tie for the 5th and 6th seeds, and the first tiebreaker would be H2H record which would send 100T and SEN through since they have 2-1 H2H records against LEV and FUR's 1-2 H2H records. the playoff seeding would be LOUD #1, C9 #2, EG #3, NRG #4, SEN #5, and 100T #6.
the reason that 100T has to lose to MIBR to fall into the tiebreaker because otherwise the 3-way tie between SEN, LEV, and FUR would go to map differential since they would all be 1-1 against each other, and LEV is guaranteed to have a higher map differential than SEN.
NRG also must win against LOUD in this scenario. EDIT: this has already happened! if NRG had lost vs. LOUD and ended up falling into the tiebreaker, then NRG would have expanded the tie to a 5-way tie, and that part of the standings would have looked like this:
NRG 4-5 (3-1 H2H)
100T/SEN/LEV 4-5 (2-2 H2H)
FUR 4-5 (1-3 H2H)
i believe that this would have put NRG into playoffs and eliminated FUR, leaving the last 2 spots to be determined by map differential between 100T, SEN, and LEV. however, LEV would be guaranteed to have a higher map differential than either of the other 2 teams, leaving either 100T or SEN to be eliminated, so that is why scenario 1 required NRG to beat LOUD to avoid falling into the tiebreaker, even though NRG themselves would have been fine either way.
the final standings for scenario 2 would be similar, but the tie would be between:
100T 4-5 (3-1 H2H)
EG 4-5 (2-2 H2H)
SEN 4-5 (2-2 H2H)
FUR 4-5 (2-2 H2H)
LEV 4-5 (1-3 H2H)
i believe that this would put 100T into playoffs and eliminate LEV, leaving the last 2 spots to be determined by map differential between SEN, EG, and FUR.
in this scenario, SEN, EG and FUR will all have a map differential of -2 or -1. this means that SEN has to beat FUR 2-0, since if they win 2-1 then FUR will have a -1 and SEN will have a -2, but if they win 2-0 then FUR will have a -2 while SEN has a -1.
edit: SEN won 2-0 vs. KRU eliminating the round differential scenario, so I've removed that from the explanation. if SEN beats FUR, one of the two teams will have a higher map differential than the other.
EG is also guaranteed to win either the map differential or round differential tiebreaker against FUR in this scenario (even if they lose 26-0 to NRG they will still have a higher round differential than FUR, since they would be at -6, and FUR's -8 can only go down if they have to lose 0-2 to SEN)
the playoff seeding for this scenario would be LOUD #1, C9 #2, NRG #3, 100T #4, and EG/SEN #5 and #6 (order TBD)