Laughing =/= Toying
I think we need to make this clear, otherwise some people are presenting wrong things in debates.
First of all, as you all know, Sidious was laughing to Yoda.
2:10
Darth Maul laughs to Obi-Wan
0:20
Darth Maul laughs to Vizsla
1:22
Though Maul could blitz Vizsla or stomp him with the force, but clearly he was trying to beat him fair and square in only physical contest and he wanted prove his physical skills against his mandalorian weaponry, otherwise Death Watch wouldn't join him.