The difference between Tutu and Higgs are head and heart. I think Tutu has heard all the trash talked about him and has an anvil sized chip on his shoulder. He has to catch everything thrown to him, or he's off the team, and he plays like he knows it.
I don't hate on Higbee, but he is what he is. He doesn't have to be Kittle or Kelce. Just block and smile. Every game Ive been to, he's about the happiest guy out there. It's why in the happy go lucky round of doling our Team Captains, he usually wins the popularity contest. Nice guy. Decent blocker. Good team mate. Got him longest term ever for a Ram TE. Sure wasn't based on his production.
One plays like his career is on the line every game. The other knows he's not going anywhere, and it shows.