Sen has been doing fine in scrims.
https://clips.twitch.tv/EncouragingGorgeousCardArgieB8-7Y_XtG3jux2pyeKR
You have to remember that Scrim games is where most teams practice new strats and different agents, all while playing against other teams to give themselves a visual idea of how well they can manage with their new strats and agent combo. Scrims can mean that a certain strategy didnt work, and it can also show what a team needs to do to out-preform the competition. Anyways, i wouldn't sweat NA teams losing scrims