The jet I listed was the US's fighter used in Korea, other then the P-51 Mustang. I'm not insisting the current jet technology is 30s level anymore, since I've been presented with the new information. Jets in the 30s were horrible, the Italian one couldn't even reach 400k/h.
So, I was comparing a WW2 Fighter(Granted, a 1945 - years of development experience German bomber interceptor/fighter) to a 1949-Korean War era American jet fighter, not an early development jet like say the... Heinkel He 178, which had a top speed of only around 598 km/h(according to Wikipedia, knowledge of that jet is not something I have)
I'd also like to correct a mistake I made earlier, the P-80 Shooting Star's top speed was actually around 950k/h. I was thinking of the very early development of the plane, not the one used a lot.
Still, the advantages a jet has compared to a prop plane is the ability to choose when to engage. If the P-80 misses, all it has to do is just keep flying away, turn around once far enough, and go for another pass.
I think the real question is if Chinese and Spanish pilots have the experience with said planes to understand that.