"Assuming the same charge rate."
But that's very much the point here: it seems that Leafs and Spark EVs charge faster than the Bolt does in absolute terms as well as relative terms, at least on the available stations. I don't have much expectation of it going faster when bigger stations come out, either, given how roughly and sharply it limits for ~50% SoC on up.
So your contention is that Chevrolet exaggerated their specifications on their car. It could happen I suppose. Name one time in 20 years that was true? I'm honestly curious having spent more hundreds hours on dynometers than most people. Unlike other brands, if Chevy says xxx HP, xxx MPG, xxx lbs, xxx g's, xxx top speed, etc, you can take that to the bank and get interest.
But even given the early DCFC teething pains, you will still cover more ground in a 200 mile EV. And a 200 mile EV can travel to a lot of places that a "125 mile wishful thinking" EV cannot. EV mfrs provide the EPA with their range, and they get to pick how it's calculated. This is why GM range tends to be in 5280 feet per mile, and other brands tends to be 5000 feet or less. Sort of like horsepower.
The comedy routine of the last 20 years was when Chevrolet released a 305HP Camaro, Ford released a 320HP Mustang Cobra, and BMW released a 338HP M3.
Ford rated their engines like the Japanese and Germans did, with their thumb on the scale.
Ouch. It was ugly. Trap speed, top speed, and chassis dyno numbers were far higher on the Chevrolet which was far cheaper as well. And they put the rev limiter 200 rpm lower than peak HP so once you adjusted that, it was more than a full second quicker and 10 mph faster in a 1/4 mile instead of 0.7s and 7mph quicker.
For those who are not track hounds, 1.0 seconds in the quarter is a whole different league. 3 bus lengths in the quarter.