Oddly enough, but not surprising, the ONE thing Christ said that would identify his disciples is NOT on this list.
By this all will know that you are my disciples—if you have love among yourselves. - John 13:35
In addition, Christ warned that there would be all sorts of people who would supposedly do stuff in his name. His reaction?
Why, then, do you call me ‘Lord! Lord!’ but do not do the things I say? - Luke 6:46
What things did Christ say to do BESIDES teaching others do observe his commandments?
How about this?
Eat his flesh and drink his blood (figuratively via partaking of the bread and the wine). See John 6 and notice the words, "unless" and "whoever". JW's do NOT do this because their leadership has told them that they are unworthy.
There's plenty more. Here's a nice, succinct list: http://iblp.org/questions/what-are-commands-christ
Something else to consider: The phrase "true religion" is not in the Bible (just like Trinity or Rapture). The concept of religion is. It's found here:
The form of worship that is clean and undefiled from the standpoint of our God and Father is this: to look after orphans and widows in their tribulation, and to keep oneself without spot from the world. - James 1:27
Do JWs have a program set up to look after orphans or widows? No? Why not?
I could go on, but I think I'll stop now.