It's an interesting question, I think there might be some weight to it, but I have also heard others say it's mostly bunk...so idk.
I will say this. In the Vapor boot, your foot will be a little more pitched forward or 'on your toes' compared to the Supreme boot, due to skate profiling. In the Supreme boot, your foot should sit a little more neutral or flat.
So in theory you might be able to take a bit of a longer stride in the Supreme skate while in the Vapor skate since your more on your toes, you might (operative word might) be able to cross-over and stop and start a tad bit quicker.
I don't know. When you see guys like Patrick Kane, Johnny Gaudreau, Sebastian Aho who wear them and are the face of Bauer Vapor it does make some sense. Those guys aren't the most powerful but they are definitely quick and have that skating style where they're almost always crossing over when they are skating.
Contrast to guys like Jack Eichel, Chris Kreider and Ryan McDonagh who are all very powerful skaters and frequently use that north-south long stride skating style as some of the faces of Bauer Supreme, it is interesting. I'm sure you might be able to find some counter examples on both sides though.
I think guys who have more of that distinct skating style might feel more comfortable in that particular skate (Kane in Vapor, Eichel in Supreme) but it's not gonna change the way you skate or be some huge difference like "Wow, I can't turn or stop on a dime in these Supremes" or "I feel noticably less powerful in these Vapors".