SoulWind vs Manaphy
SoulWind is pretty good already in gen8 ubers as in ubers live tour week of ss ubers , he easily defeated people and reached finals however he got sweeped by just 1 pokemon (zarude-dada) of finalist which show that during teambuilding he still is unable to cover all pokemons used in SS ubers. As he plays more slowly he'll know more about ss ubers and hopefully enjoys too !. Manaphy on the other hand is an ubers main and has more experience than soulwind and is quite strong as well ( 6-1 in UPL). So heres my predict in terms of teambuilding im sure because of a lot of more experience than opponent , Manaphy will bring a better and stronger team than SoulWind while obviously soulwind will play better than manaphy but imo in SS ubers a bad team can be an huge issue and sometimes makes MU unwinnable. Assuming that manaphy will not choke because opponent is Soulwind himself , i think for week 1 Soulwind can lose this.
Icemaster vs byronthewellwell
I dont have much to say for his matchup because while icemaster is on top of the list of "Best SS Ubers player" "Most expensive SCL ubers player" and is very consistent in this gen on the other hand i dont know much about how byron plays this gen and even if he'll try very hard in it. The gap in experience about ss ubers will decide the game. Though as a player i think both are solid and equal in their gen.
Byron is great in usum and ice is great in ss.
M Dragon vs Exiline
Honestly i dont know whos M Dragon but the Fatfighter teambuilding skills were considered one of the best during ubers winter seasonal time and combining that with Exiline playing ability ( Ubers ladder tour winner ) i think they both are going to be insane. Not to mention TJ is with them as well.
Fc vs 64 squares
FC has the garay oak with him on back as support so FC teambuilding skills + execution skills are already considered top and if garay start helping in teambuilding so this is going to be insane combo. However 64 squares on his own has already defeates icemaster 2-0 in Ubers summer seasonal so this is indicating the amount of effort 64 is putting in Scl for this team and for his performance. I watched the 64 vs icemaster game live so i know how good 64 played that game.
This is tough one to pick for me but since garay is ONLY going to be helping in teambuilding and 64 is an insane builder himself too so i think this will come down to who choke less during match and for that i'll pick 64 as winner here because hes simply better overall.
Poek vs TrueNora
Honestly i dont know any player whos not ubers main or are not so active in Ubers and thats bad ( M dragon and now poek too) so it makes it harder to bold someone.
For here i only know about TrueNora and how good he is. Hopefully nora could give time to preperation outside of his job irl otherwise this is going to be opposite of what im thinking.