He's clearly in better physical shape and condition then Colston was at any point in the past two seasons.
He beats man coverage deep several times in that highlight video as well.
I don't just think he could help us out offensively. He could be a difference maker, especially in some of the areas we struggled the most in. A thick physical, possession receiver like that is simply something we do not currently have on the team (Thomas' potential aside, he could be that guy eventually among other things). Coleman even at his size is nowhere near that kind of talent in traffic. Cooks and Snead fill their roles but aren't that kind of player either.