I agree he has a perfect style and speed to upset Louis,who didn't like swarmers or pressure fighters...The biggest advantage for Louis is reach,which I don't think bothers Qawi watch his first fight with Holyfield,theres nothing Louis brings to the table Holyfield didn't beyond punching power.I'll take the style clash and favor Qawi here..Louis was a Cruiserweight mostly at 190/200 pounds so im not sure Cruiserweight match is relevant.I got the early 80's prime Qawi to defeat prime Louis in similar fashion what Marciano did to an older louis.
Let's be honest, the fighters Louis struggled the MOST were Schmelling, Conn, Walcott and Charles. And he was well gone vs Walcott and Charles, all boxers. I guess if we're being critical we can add Marciano to that list, but Louis wasn't far from a walking corpse in. Your points about swarmers are correct, but I fail to see how he has the perfect style for Louis.