Right now, Spence is enjoying boogeyman status and he himself keeps repeating that everyone under the sun is ducking and dodging him. So now that he is fighting someone that is significantly smaller, does Spence take an "L" (reputation) if he beats but doesn't destroy Mikey? Will anything less than a T/KO be disastrous? Or if Mikey runs him close?
As Spence is so much bigger than Garcia, based solely on your avatar, I can't see Mickey lasting 12 rounds. Spence will kill the body for 6-7 rounds then go for the ko.
If the fight goes to decision it could temporarily hurt Spence's reputation. However, going the distance with Mikey can actually HELP Spence as it would embolden the other welters to actually get in the ring with him. I see this fight lasting 8 rounds. Mikey will be competitive until the size and power starts to break Mikey down.
Mikey is only moving up one weight class. Why is everyone acting like he's moving up 2 or more? Yes, testing 147 without a tune up against Spence is ballsy af, but it's only one weight class!