Source?
TN-80 itself weighs 200 KG, FYI.
Look it up yourself. You still haven't found me a link which says ASMP's payload is 300Kg.
Do you have a source for weight of the the said seeker?
That's how clever you are. It's not about weight, it's about size. Seekers are big, look up Brahmos' seeker, it's availabe on the net. Seekers take up size that's suppose to make the missile thinner and smaller or take up room for fuel. It's also the reason why Brahmos is fatter, 'cause it needs to have a seeker with a large enough antenna in order to find its target before it reaches a point when it can no longer change its direction. Due to the increase in seeker diameter, it's obvious that the airframe needs to be bigger. It's the same reason why an aircraft that has a 900-1000mm radar is a giant whereas 600-700mm radar carrying aircraft are small. And with a larger seeker and bigger warhead, you need a bigger airframe, which in turns increases weight, which in turn needs a more powerful engine, which in turn needs a lot of fuel, hence the higher overall weight.
LRASM uses a longer seeker, which takes up even more room for fuel. Hence the 40% reduction in range.
This is what I meant when you don't even have the basic common sense knowledge about why missiles are designed the way they are. No one with such basic knowledge will actually compare missiles of different classes meant for different roles.
Unrelated.
Of course, you will find it unrelated. Obviously nothing surprising to me.
LRASM needs a 900Kg booster to boost a 1100Kg missile to altitude. Brahmos needs a 1000Kg booster to boost a 2000Kg missile to altitude. So, going by your logic, Russian boosters are nearly 100% more efficient than American boosters. That's how dumb your arguments are. Not only that, LRASM only needs a speed above 800Kmph as its initial speed whereas Brahmos booster has to take the missile to above mach 2 for the ramjet to kick in. So wouldn't you say Russians boosters are practically magic then?
Well, I don't want to learn, I want to see sources and evidence of your assertion.
It's impossible for you anyway.
Source of "Expensive RAM-jet fuel".
The Russians export downgraded fuel compared to what they use for their own stuff. Pretty much on everything that doesn't come out of a civilian refinery.
Source of "150 KG" payload of ASMP.
Look it up.
Source of Brahmos seeker weight.
No common sense.
If you don't have the source then you are just blabbering bullshit.
Whatever makes you happy. Nothing I have said requires anything more than common sense to figure out.