Adrien broner vs shawn porter at catchweight

im break it down for u guys first of all why are they fighting at a catchweight?when broner fought twice at welterweight before against paulie and maidana he struggled with both fighters and was knocked down twice and lost to a b minus fighter in maidana it pretty much exposed broner as a fighter who is flat footed and very easy to hit and also showed he was a hypejob picking on smaller fighters at lower weight classes coming in at 154 as a jr middleweight when he was a lightweight at 140 he doesn't have the power he did when he was at lightweight can Adrien handle shawn porter punching power and speed porter beat devon and made him look stupid and fought kell brook who is a champion I think Adrien gets knocked out in the 11 round by ko and shawn over comes the catchweight like fonfara did to Chavez jr that type of fight let me know what yall think