It's literally on camera for everyone to see. This is exactly what happens: Montgomery makes multiple Iowa players wiff, gets stopped short of the goal line by Jewell, Gervase helps Jewell push Montgomery back, Gevase falls to the side, Eaton comes and pushes the pile forward into the endzone.
Lol! Montgomery literally has has him bent backwards and on his knees while he's driving and then Eaton gets there. What do you think the outcome would be there if Eaton didn't get there? Jewell couldn't tackle him while standing on his feet, much less getting bent in half. The only thing that gave him a chance was Gevase, and it still wasn't enough.
Really one sided matchup.