Indeed, I was talking about this just recently with the PL-15 claimed range being apples-oranges with proven BVR systems deployed.
The PL-15 is the first operational missile of its class, ie, dual thrust motor, AESA seeker etc. And it's being severely underestimated for some reason outside Chinese circles.
Western analysts claim it's capable of 150+ Km, hence an underestimation. And on the other side the Chinese are claiming it's capable of 300-350Km, perhaps an overestimation, perhaps not.
Of course, the Chinese numbers are at an unknown altitude. And western analysts like playing down non-western systems so they throw around numbers that are acceptable to their psyche. But that's at the cost of creating false equivalence with existing western systems.
The only thing we can say for sure is all existing BVR missiles save for Meteor have been outclassed by the PL-15. It's pretty incredible the kind of lead the Chinese have taken. It's no surprise that the Americans were caught sleeping, but even the Japanese are 7 years away from matching/exceeding the PL-15 with the JNAAM. And I'm sure the Chinese are going to drop more such bombs on us over the next few years.