Yes,all that Stocky man had to do was put his bloodied clothes in his shoulder bag and wander back to his
Travelodge at a leisurely pace and wash up.No association or link with the victim whatsoever,and unlikely to leave much DNA at the locus.
Luke on the other hand,oh dear,what a shambles.
First mistake,he knew his victim,better to attack an unknown stranger in a different neighbourhood.
Second mistake,he was the victims boyfriend and had arranged to meet her.Not an ideal situation for a would be serial killer.
Third mistake,everyone knew he was going to meet his victim.
Fourth mistake,he wore the clothes that everyone associated with him and caused suspicion when they disappeared.
Fifth mistake,he wasn't fast enough crossing the road on the way home and was seen.
Sixth mistake,for some reason he thought it best to lead a search party directly to the victim and describe things that could not possibly be seen.
What a silly laddie!