<human>: Hello to anyone who sees this. I am new here. I tried to do the right thing by looking at the FAQ first, but I couldn't particularly find what I was looking for.

My question is, what typically burns more weight off: strength training with weights and building muscle or consistent cardio workouts. 

I have access to a gym with free weights and machines, but should I be going there and working my core, chest, arms, legs, etc. or could I just be going on the bikes and treadmills?

Some background on myself to better understand the situation: I really only want to flatten out my stomach to get defined abs and chest. I don't believe I am too out of shape, 5'11" and 190lbs. I don't really know what I'm doing when it comes to free weights and lifting. I stay active as a college freshman. Hockey, broomball, ultimate, etc. I'm in the process of limiting my soda intake. I only give this because I know every person is different in their body and working out.

Can you condense the text into three sentences or less?
<bot>: Is cardio (bikes, treadmills, ellipticals) or lifting/machines a more effective way of losing weight?