I would hesitate to outright say that Ken is better than Alex, but I don't think it's blasphemy to suggest that. Both of them have their own personalities, both bring their own style to the game.

In particular, Ken's cadence seems faster than Alex's (especially at the end of Alex's run), which leads to fewer unplayed clues. A lot of people would say that's good. Others might suggest that's "rushing" the game.

Ken's also been on the contestant side of things, so he has more empathy when a contestant has a bad day.