Couldn't Geten just play the waiting game? He never ever goes close to his enemies iirc, and he'll just spam his ice, if he realizes that Deku's attacks destroy his ice with relative ease, then no way in hell will Geten go close to him. Not only that but Deku clearly is limited in movement in 20% so Geten will capitalize on that.
Izuku cannot use Blackwhip for combat in this key, this is before the Endeavor Training Arc. This is his Joint Training Arc key, which means he has basically no control over Blackwhip.
Except the calc for Class M 20% comes from Post Endeavor Agency? And features him having control over Blackwhip? And being fully capable of fighting at 20% for prolonged periods?
I have no access to the movies aside from small clips, how much does he use 20%? I see that both it and 8% were used
Izuku stated during the Endeavor Agency Arc, in which he could use 10 to 15% normally, that his movements were limited due to the pain with 20%.
Limitations so minimal that he can easily ignore them through the use of willpower.
He uses both 8% and 20%, the first time he used 20% for an extended period of time was against Overhaul, but that was a long time ago and Joint Training Arc Deku is even able to use higher percentages like 100% for several without much hindrance.
Geten can throw pretty sharp ice, as seen during the War Arc. Taking hits means impalement, and Izuku's movements are limited in 20% that he is bothered by them. It is a legitimate weakness, his movements are simple while in 20%.
In the Heroes Rising movie his movements are definitely not just simple. He was dodging Nine’s lasers with backflips and cartwheels while jumping between rubble and flying around with air pressure.
