1. SoulWind vs 9. BKC - BKC is the clear favorite in DPP while, imo, Soulwind is the fairly clear favorite in BW. ORAS should be close, but Soulwind seems to exhibit more competency playing the tier than BKC at the end of the day. It could go either way tho - probably my favorite series this round and it is between two of the best players out there rn.
2. Ciele vs 7. Posho - Posho's favorited in ORAS and Ciele's favored in the other two, but I reckon Posho's very capable of winning any of the three tiers and his ORAS win seems very likely to me, so I think he'll find a way to win two of the three here. Probably a bit of an 'upset' or unlikely prediction, but I have faith in my boy!_!
4. Jimmy Turtwig vs 12. FLCL - This match-up actually is kinda shitty for FLCL because JTurt is probably the better of the two in BW and FLCL usually banks on BW+ORAS, but I don't think JTurt is anything special in DPP and FLCL should take ORAS, so should be close, but leaning FLCL.
6. dEnIsSsS vs 14. xtra$hine - simply put the better player.