Ossas was sitting on the payload at the end for you that kept it moving. Some one staying on the payload even if the vanguard needs to rotate because he sees and opening for attack makes a difference. Alot of games people leave it solely to the vanguard to make the payload move and it's just not smart or good team work.
To be honest it was mostly because of Easy bot's Aleta, he was doing a good job distracting your teammates, I think that's what made the difference for the enemy team. And your team also did a great job recovering from that. But I wasnn't sure what the enemy Jabali was doing, he just let y'all through by not getting close to the payload when you were close to it 12:31 , my boi is chasing marchetheus at the back. Also shoutout to Osas who stayed with you on the payload while mark is doing mark things. Great Video btw. This game was intense.