CATL is "we're going to mass produce this specific well known technology" and while there's some question as to precise numbers for their implementation of it they aren't claiming anything surprising. A worst they're somewhat over optimistic and fail to be a commercial success. At best they're slightly under optimistic and are slightly more successful than anticipated. We can be confident they aren't flat out lying (though they may be exaggerating) because the claim is so mundane.

Donut is "we're going to produce a technology capable of achieving targets that haven't even been demonstrated in a (public) lab. We won't tell you what specific technology. We're going to put this miracle battery in motorcycles, because we can". At worst they're flat out lying to scam investors - but if they're not lying, even if they're over optimistic, they've made a significant advance in the state of the art that will eventually (once it's not just put in motorcycles) have widespread repercussions.