Never judge the validity of what a person says by how they look!
Anthony, at the gym the other day some big guy told me that to get big I needed to train hard EVERY day and perform a lot more sets and reps. Somewhere in the range of 15-20 reps per set. I’m confused because you say the opposite
He's really huge though, what do you think?
Stop listening to every piece of random advice in the gym. I know this is sometimes difficult because your mind thinks “this guys is big, so he knows what's he's talking about”. Unfortunately this is not necessarily true. Some people are just big by default. They can do anything, eat anything and still be big and get bigger. If you are not one of those people, how could any advice they have help you?
I know you are making great progress on your current low volume program, so why would you let some random comments overshadow your progress and make you reconsider your training? You must have some faith in what you are doing, especially if it is working.
Never judge the validity of what a person says by how they look. Just because the guy is huge doesn't mean he is spewing pertinent advice for you. Many people that have big physiques are big despite of their training, not because of it. I know some huge guys that know very little about training and dieting correctly. They can do whatever and still gain muscle; unfortunately we are not that way, so we much approach things in a more intelligent manner.