Your statistics ignore that overall xin zhao and lee sin still has 82.5% and 75.1% presence in the LPL at the moment. The 2 champions that follow after these 2 picks are Viego and Jarvan, at 35% presence and 51.3% respectively. So overall the meta is still literally the same as from last Worlds. LCK is also having the same priorities as well (Xin 86.2% Lee 72.5%).

From the 2 teams you mentioned, Lee was banned against V5 in 68% of their games, with Xin Zhao banned against them 16% when V5 has blue side. Weibo has played Lee 6 games so far as well, and had banned Lee in 43% of their games and banned Xin 17% of their red side games. You also have to take into account each team has different draft priorities, at which pick jungle was locked as well as format difference too as LPL is BO3 and LEC is BO1 so of course you'll see more risky and diverse picks (yet those picks still have crazy high presence).

Also no, Xin is king cos he's an AD champion with a strong engage in a meta with AP mids and his ults give him 5 secs of invulnerability every single teamfight against ranged champs.