Sen can be in trouble in a bo5

Assuming Sen Ban Breeze
Prx ban icebox (should ban split imo)
Sen pick split sen 1-0
Prx pick sunset ( can go eitherway but prx have a good chance) 1-1
Sen pick lotus 2-1
Prx pick ascent 2-2
Bind remains ( sen switched up bind and it looked alright but this can go eitherway)

I mean Paper Rex is also a team having bad bo5 tho

sen lose

apac finals

prx win

gg

3-2 game, imo Sen take it but seeing apac winning would be funny too

I have been looking for info about this but haven't been able to find anything.
Does SEN get a map ban advantage in this Bo5 since they came from upper finals or no?