Funny you say that, both song actually have that hopefull theme and sounds to it, like giving you hope and not give in to despair. The only difference, in my opinion, is that Flow sounds more like a goodbye song from someone you know for a long time, draws inspiration from, and that person also wants you to move on and find hope in yourself. In short, this one is more into the sad spectrum. And at the end of the song, you'll find yourself crying. While Tomorrow and Tomorrow is more like someone is holding out their hand to you while you are down. Motivate you to live on despite the loss and hardships. I mean, even the chorus is an uplifting "Stand Tall!". This have a more bittersweet taste of it. And at the end of the song, you'll find yourself smiling. I guess you don't like crying. xD
