From the 35/50 log it looks to be about 5-6 seconds to 20mph (1500w max)
From your 70A log it looks like 0-18mph is about 12 seconds maxing at 26 battery amps (2,000w max) but I’m not sure if that was full throttle or not.
Also that looks like a lot of sag on the battery. 77v down to 73v at only 25A? I get 43v-38v on a 12s4p 30q pack at 50A on my esk8. The battery may be built well but maybe the connectors are bad?
Stock settings, ran the motor & input wizard, then set battery/phase amps.