Haste provides higher dps, higher absorbs per minute, more holy power, more hps.
Expertise provides, ehr, if you cant plan ahead your HoPo and you just use your SotR randomly without thinking you dont have to have the risk of missing a HoPo generator when you are at 2 HoPo.
While exp may be better in a simulation between 2 robots punching eachother in the face for 10000 minutes, haste superior in a more realistic situation presuming the tank is not a complete vegetablehead.
Also, when did Felir post, must have missed it.
Edit: Ah you mean that old post like 10 days ago?
Well to add to that.
T1 talents: PoJ has never, and will never be a viable option compared to the other talents. LAotL is always superior to PoJ, however SoL is a situational talent that is awesome, and in T15 imo SoL>LAotL on every fight. LAotL and SoL also allows you to have the pandaren step enchant if you so please.
T5 talents: yes, all three of these talents are viable and situtational. Come T16 however HA will become a fairly situational talent and DP/SW will be the norm.