I think each movie has its own timeline where any weird plot hole just fixes itself because it's not canon and therefore has different events. (this applies to GT as well)
It kinda depends on how many aliens he killed because he technically saved 8 billion people and saved the entire universe in TOP. But I don't really know, I might be wrong
So what do you think would happen?
I think he would gain sentience and become as smart as the old cell, but in power I think he would be on par with black Frieza in raw strength especially considering his size.