lck vs na/eu lcs

Started watching lcs very recently , i watched the semis and finals of both eu and na and every again had basically the same picks ,except for the suprising yasuo i saw ,but after watching lck today for the first time i was amazed at how different the picks are , kennen sup ,diana mid even RIVEN MID .The play styles where also so different ,just thought i would share this because faker mid and the diana destruction and the kennen sup!!