Well, let's entertain both scenarios:
- Hela gets her super knifey powers (as it should be in this thread), then see my above response. Team is gonna have to utilize QS and Vision, as well as use the more exotic powers of Strange, AO, and Ant-Man or they'll all get impaled quickly. QS can run around for quite some time, but it's an unknown if he can ever finish the fight against Team Asgard if he's the last man standing for Team MCU.
- Hela doesn't get her super knifey powers, Team MCU's case gets much stronger, as now guys like Tony, Falcon, Vision, and Rhodey can go into the air and spam air strike after air strike on Hela. See again my above response for hax attacks on the other members of Team Asgard.