Glover Teixeira knocks people out, of that there's no doubt. He has won 11 of 18 career victories by T/KO. In his UFC debut, his chokeout win over Kyle Kingsbury began with a damaging uppercut.
This is all pretty common knowledge, though. People may be less familiar with Maldonado, but as mentioned, he's a hot prospect himself.
Maldonado is a former professional boxer. In that line of work, he notched 21 of 22 victories by T/KO. He especially likes to attack the body. So far in MMA, he has won 12 of 18 victories by knockout. That's one more than Teixeira.
Here's the rub: Maldonado has good expertise, good power and a good chin. However, he has looked kind of pedestrian in both his UFC fights thus far. He lost a tough one against Igor Pokrajac and Kyle Kingsbury before that.
Slight Advantage: Teixeira