Thank you for this

i think you can't copy online stats, can you?
the kz3 mp trophies are the same as in the disc version + all dlc trophies.
if you're rank 31 already the trophy will pop instantly and if killed 1000 ppl the trophies (kill 500 & 1000) will pop after 1 kill.
same with winning 3 matches. just winn 1 match and the trophy will pop.

yeah you're right, as long you obtain the plat on the disc version and use your existing game save, some trophies will pop instantly because it's already been achieved. so kills, level up trophies will pop and what not, so no need to worry there. all the other misc trophies can be boosted, just look at the description and see what you got to do and presto you'll have your plat in no time.

kz3 mp have a different save. so it have your kills and stuff but I'm almost sure you can only earn it if you never played online (like GTA wanted)

Which trophies pop up? You said 3 gold and 2 silver trophies.