Personally, I would base this completely on whichever top tube is a more comfortable reach for you. After that I would base it on whichever bike has a little bit quicker handling and lighter weight, which I believe is the Trek. Especially since you’ll be using it as a commuter also, having it be lighter and handle a little better will be nice in your daily life. Just because the bike is a touring bike doesn’t mean it needs to handle like, and weigh as much as, a truck.