Absolutely, but context is everything. If one is *commuting* then without doubt (and contrary to the claims of some posters) the fastest way is A/R. If you wish to take the 'scenic route' then King is good, but don't treat it like a rapid-thoroughfare! That is exactly what's going to kill it, cyclist or driver alike.
It's a *transit mall* and there *just isn't enough space* to make it a multi-use throughway. A/R work so well because they are on one-way streets, which if you think about the physical logistics, greatly simplifies (relatively!) the complexity of junctions and contra-flow vehicle traffic. Those two (A/R) are 'bike throughways'. King isn't, and it never should be. There's going to be enough trouble as it is protecting pedestrians from traffic, and themselves. King is an excellent destination, it's not an excellent thoroughfare, if even good. The best it should get is to share the vehicle lanes, and even that is too much vehicle.